- Must I study medicine and be a doctor like you，Dad？
- No，you ______________，son.You're free to make your own decision.
| A． |
can't |
B． |
mustn't |
C． |
shouldn't |
D． |
needn't |
﹣ It's said that shopping online is safe．
﹣ ____．You'd better be careful．（ ）
A．I agreeB．That depends
C．I think soD．No problem
The weatherman says a rain shower ____ this afternoon in the south．（ ）
A．expectsB．expected
C．is expectedD．was expected
Yuan Longping is ____ regarded as the greatest scientist in rice planting．（ ）
A．suddenlyB．patientlyC．hardlyD．generally
Little Jack has learned to do lots of things on his own， ____ he is only four years old．（ ）
A．ifB．thoughC．forD．since
﹣Will you go to the picnic this Saturday？
﹣I'd like to ， ____ I'll have to help look after my baby sister．（ ）
A．butB．orC．andD．so