问题

Mountain climbing ______ be really dangerous at times even though it is challenging and exciting in general.

A:can
B:should
C:shall
D:must;

正确答案是：

同类题型

We can’t blame John for the mistake. He wasn’t here when we decided what to do, so he ___ about the plan.[ ]

Would you like me to help you— ________ .

Mrs Johnson said, “I drew the picture last week.” Mrs Johnson said thatthe picture

______ me a chance to try, I believe, I won’t disappoint you.

I used to quarrel a lot with my parents，but now wewell.