To their disappointment，Dr Wang gave a speech about the economy without even a passing________to the problem of unemployment A:However a seriousproblem
B:Whatever a serious problem
C:However serious aproblem
D:No matter how a serious problem

I’m going to give a talk on the Dragon Boat Festival to the exchange students.—Great! But don’t forget to tell them______. A:what should they eat at the festival
B:why people enjoy the full moon
C:what kind of race is often held
D:How do people celebrate it;

I told you she was not serious about himand now she has dumped him—Poor boy! It will take him a long timeto get over this A:aren’t I
B:wasn’t she
C:wouldn’t you
D:hadn’t you

Mum, please help me preparethe things that I will take to school. — You are todo this kind of thing by yourself, aren’t you A:enough old
B:old enough
C:enough kind
D:kind enough

e the students understand the problemthe teacher tried to explain it, but the explanation just did not _________tothe class A:nature is being ruined
B:which nature is ruined
C:on which to ruin nature
D:of nature to be ruined

Would you like to eat up all the food on that plate ——Sure,but that is not _______. I have already eaten all my food up. A:me
B:my
C:mine
D:myself’s ;