1．My parents are very kind to me and always let me do________I think I should do.
答案： whatever/what
2．Mary wrote an article on________a balanced diet is important for people to keep healthy.
答案： why
3．I really don’t know ________he has gone and when he left.
答案： where
4．He didn’t buy that flat last week.That’s __________ he didn’t have enough money.
答案： because
5．Parents are taught to understand __________ important education is to their children’s future.
答案： how
