Today, we’ll discuss a number of cases _______ parents have much difficulty in communicating with their children.
| A．where | B．as | C．why | D．which |
Susan wanted to be independent of her parents. She tried _____ alone, but she didn’t like it and moved back home.
| A．living | B．to live | C．to be living | D．having lived |
I called Hnnah many times yesterday evening, but I couldn’t get through. Her brother _____on the phone all the time!
| A．was talking | B．has been talking | C．has talked | D．talked |
The flowers were so lovely that they __________ in no time.
| A．sold | B．had been sold | C．were sold | D．would sell |
We first met on a train in 200We both felt immediately that we ______ each other for years.
| A．knew | B．have known | C．had known | D．know |
Teenagers____their health because they play computer games too much.
| A．have damaged | B．are damaging | C．damaged | D．will damage |