When they look back on the past few years, many people wonder ______.
A. where time has gone B. where has time gone
C. where time will go D. where will time go
The driver was very happy that his car ______ very well in this car-washing centre.
A. cleans B. cleaned C. was cleaned D. is cleaned
— I didn’t know you were friends with Mr. Smith.
— We ______ each other for6 years.
A. knewB. are knownC. have knownD. will know
When I was a boy, I often ______ to play in that park.
A. went B. have gone C. go D. will go
— ______ do you go to the gym?
— Once a week.
A. How farB. How oftenC. How longD. How soon
Nowadays it’s very useful ______ a foreign language.
A. learnB. learnedC. to learnD. learns
