Liu Yang has gone down into history because she is the first Chinese woman ________ in space.
| A．traveled | B．having traveled |
| C．has traveled | D．to travel |
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 |