1. They have been good friends _______ they were young.
A. while B. until C. for D. since
2. A. chaik B. chair C. machine D. watch
A. believed B. swapped C. moved D. closed
3.(dấu nhấn)
A. robot B. dishwasher C. automatic D. supermaket
A. Pacific B. symbol C. moment D. industry
1.D.since
2.C.machine
B.swapped
3.A.robot
C.moment