Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

I put my keys on the table, but now it’s gone. Someone                 have taken it.

A. had to

B. should

C. would rather

D. may

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

She expected x to the principal.

A. being introduced

B. to introduce

C. being introduced

D. to be introduced

Read the following pasage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.

As heart disease continues to be the number-one killer in the United States, researchers have become increasingly interested in identifying the potential risk factors that trigger heart attacks. High-fat diets and "life in the fast lane" have long been known to contribute to the high incidence of heart failure. But according to new studies, the list of risk factors may be significantly longer and quite surprising.

Heart failure, for example, appears to have seasonal and temporal patterns. A higher percentage of heart attacks occur in cold weather, and more people experience heart failure on Monday than on any other day of the week. In addition, people are more susceptible to heart attacks in the first few hours after waking. Cardiologists first observed this morning phenomenon in the mid-1980, and have since discovered a number of possible causes. An early-morning rise in blood pressure, heart rate, and concentration of heart stimulatin hormones, plus a reduction of blood flow to the heart, may all contribute to the higher incidence of heart attacks between the hours of 8:00 A.M. and 10:00 A.M.

In other studies, both birthdays and bachelorhood have been implicated as risk factors. Statistics reveal that heart attack rates increase significantly for both females and males in the few days immediately preceding and following their birthdays. And unmarried men are more at risk for heart attacks than their married counterparts. Though stress is thought to be linked in some way to all of the aforementioned risk factors, intense research continues in the hope of further comprehending why and how heart failure is triggered .

According to the passage, which of the following is NOT a possible cause of any heart attacks?

A. Decreased blood flow to the heart

B. Increased blood pressure

C. Lower heart rate

D. Increase in hormones

Another satellite, Vina-sat2, ________ up into space by Viet Nam recently.

A. has been sent         

B. has sent   

C. sent         

D. was sent

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Information on the Romans can find not only in these books but also on the Internet.

A. Information 

B. can find

C. in 

D. the Internet

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

It was difficult for me to see in the dark cave.

A. It's very dark in the cave for me to see everything.

B. The cave is too difficult for me to see in the dark.

C. I find it too dark and difficult to see the cave. 

D. I hardly can see in the dark cave.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

I'd prefer Ben to teach me to how to ski.

A. I fancy skiing with Ben as my teacher.

B. How to ski with Ben as my teacher is my favourite. 

C. I'd like better to be taught to ski by Ben. 

D. I'd rather Ben taught me how to ski.