用下列动词的正确形式填空. (10%)
（1）Let’s_______ (throw) away the old newspapers
（2）Thirty years ago when Tom _______ (be) a soldier, he ______ (fly) a plane and________(fight) for his country.
（3）She always _______ (clean) her car in the evening.
（4）What _____(be) you doing now? I’m _________(look) for an umbrella.
（5）Do you like _________(swim), Leo?  Yes, I do.
（6）Peter usually_______(have) piano lessons after school.
（7）Shall we______(put) up more posters?