Great changes ______ in our hometown in the past ten years.
A. have taken place B. have been taken place C. were taken place
It’s raining now. I have to go to school ______.
A. by the car B. in car C. in the car
______ trees were cut down. And many birds lost their home.
A. Two thousands B. Thousands of D. Thousand of
I spent a lot of time ______ English last weekend.
A. to practice speaking B. practicing to speak C. practicing speaking
We didn't go home ______ the old man was sent to the hospital.
A. until B. when C. while
—Could I borrow your computer. Bob?
—Sorry, I am ______ it.
A. taking out B. turning on C. working on