【简答题】用 Since或for填空。 1. I've been practicing the piano 10:30 .2. I've been waiting half an hour. 3. He has been living here 1999. 4. Mike has been running 10 minutes. 5. He has been working here he came her...
【简答题】句型转换。 1. I've been skating for one and a half years.(用since改写句子) I've been skating _______and_______ _______. 2. They have been waiting for half a day.(改为一般疑问句) _______ they_______ _______for half a ...