Try ___ she might, Sue couldn’t get the door open.
| A．if | B．when | C．since | D．as |
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 |
______ Mr. Brown is waiting outside to see you . He appears to be quite ____ important person.
| A．/ ; an | B．A ; an | C．The ; the | D．The ; / |
.This washing machine is environmentally friendly because it uses _____ water and electricity than _____ models .
| A．less ; older | B．less ; elder | C．fewer ; older | D．fewer ; elder |
---- If you like I can do some shopping for you . ---- That’s a very kind _____ .
| A．offer | B．service | C．point | D．suggestion |