1) the exercise was so diffcult that we couldn't do it.
=>It was.......................................................................
2) he is sorry he is not able to speak english well.
=>he wishes.......................................................
3) tom passed the test easily.
=> tom had to...........................................................
4) my friend cannot run as fast as me.
=> I can.....................................................................
1) the exercise was so diffcult that we couldn't do it.
=>It was..such a difficult exercise that we couldn't do it.....................................................................
2) he is sorry he is not able to speak english well.
=>he wishes.....he could speak English well..................................................
3) tom passed the test easily.
=> tom had no difficulty in passing test easily........................................................
4) my friend cannot run as fast as me.
=> I can...run faster than my friend...............................................................
1. It was such a difficult exercise that we couldn’t do it.
2. He wishes he could speak English well / he were able to speak English well.
3. Tom had no difficulty passing the test.
4. I can run faster than my friend.