问题

They are still very cautious about ______ side effect the new medicine will bring about, although the experts have tried it on about 2,000 patients.

A:which
B:that
C:where
D:what

正确答案是：

同类题型

Allen, why do you like MP5 players so much—Mom, they are smaller and lighter they can be carried very easily.

You’ll do much better _________ you’ re more careful with your spelling.

You should get your ideas ________ when youare putting _______ an ad campaign.

When the sick mother got up, she was surprised to find that her six-year-old daughter _______ in the kitchen

Jenny is very _______. She often shares her toys with her friends.