The teacher________the office for a few minutes when we arrived．We didn’t meet him．
A．have left
B．had left
C．had been away from
New York is one of ____ in the world.
| A．the large cities | B．the large city | C．the largest cities | D．the largest city |
Do you have difficulty ____ English?
| A．to learn | B．of learning | C．learning | D．learn |
—Why do you ____ very happy this afternoon?
—Because we are going to spend the evening at Lily’s house.
| A．taste | B．sound | C．look | D．smell |
—Michael has a temperature, so he isn’t able to come.—____
| A．I’m sorry to hear that. | B．I’m disappointed. | C．Good luck. | D．Take it easy. |
—Look at the picture . ________ big watermelon it is!
—Yes. Let’s see how heavy it is .
| A．What | B．What a | C．How | D．How a |