The biggest problem with Bob is that henever has got a/ an ___ goal in his life.

You always go to the seaside and swim during thesummer vacation. Don’t you want to try something different this year —

. My suggestion is that Tom ______________ there on time.

I have no doubt that he will make it，but I wonder __________ he is really ready enough．

Zheng He’s first stop during the expedition was in ________ is a part of Vietnam today.