Question

Happilyfor John’s mother, he is working hard to ________ his lost time.

1. A.
   make up for
2. B.
   keep up with
3. C.
   catch up with
4. D.
   make use of

Answer 1

A
make up彌補(bǔ)；keepup 保持；catch up 趕上；make use of 利用。