问题详情：
用所给词的适当形式填空
1．If you don't give him a gift，he will be ______(upset)．
2．If he __________(not go)hiking tomorrow，I won't，either.
3．I can give you a piece of ________(advice) on your problems.
4．We can see many ________(taxi) in our town.
5．He returned to his desk without knowing what ________(do)．
【回答】
t n't go ce s do
知识点：语法填空
题型：完成句子