The new building _____ at the end of this year _____to that university.

How many students listened to the teacher carefully enough in the class一 ．

The fat boyalways worries about _______ enough food _______ every day. How funny!

t cold enough for there _____ afrost tonight, so I can leave Lim’s bike out safely.

dioxide, which makes a ______ between us andthe sun, prevents heat from getting out of the atmosphere easily, so the earthis becoming warmer.