.An exhibition of paintings ____ at the museum next week.
| A．are to be held | B．is to be held |
| C．are holding | D．will hold |
If the balance of nature is ____ , a series of problems will arise .
| A．disturbed | B．troubled | C．interrupted | D．confused |
.This is Mr. White , ____ I think has something interesting to tell you .
| A．which | B．whom | C．that | D．who |
---- Will Thursday or Friday ____ you ? ---- Either will _____ .
| A．fit ; be | B．fit ; OK | C．suit ; all right | D．suit ; do |
This will not only keep the study habit ____ but also keep you up to date on your class assignments .
| A．alive | B．living | C．vivid | D．lively |
. I ________ to go for a walk , but someone called and I couldn't get away .
| A．was planning | B．planned | C．had planned | D．would plan |