用所给词的适当形式填空，使句意完整、正确。
（1） We are going to _____________ (watch) TV this evening.
（2） Will Nancy _____________ (take) part in a singing contest this Saturday?
（3） She                 (swim)tomorrow afternoon.
（4） Shall we        (have) a picnic next Saturday?
（5）       (be) you in the playground just now? No. I wasn’t.