问题

ow about the food I ordered I__________ for 20 minutes— Sorry, sir I will be back with yourorder in a minute

A:have waited
B:have been waiting
C:will have waited
D:was waiting

正确答案是：

同类题型

In no city of China _____ little about the economicdevelopment

Mr. Li is in trouble now.— You needn’t feel sorry for him. He_____it on himself.

Don’t worry, Mum. The doctor said it was only the flu.—____! I’ll tell Dad there’s nothing serious.

Before I talked with ______ scientist, Ihad never met______ clever person like him.