My friend showed me round the town, ______ was very kind of him.
| A．which | B．that | C．where | D．it |
Last Sunday he made a promise ________ he was free he would take me to Qingdao.
| A．if | B．that | C．that if | D．whether |
Last Sunday he promised ________ today, but he hasn't appeared yet.
| A．that he would come | B．that he will come |
| C．he will come to see me | D．whether he would come |
At that time I had no idea ________ I could hand it to him without being seen.
| A．if | B．how | C．which | D．that how |
Now there is a danger ________ the ground may fall in under the heavy traffic.
| A．whether | B．if | C．X | D．that |
We think it possible ________ the local government will be able to solve the housing problem.
| A．for | B．that | C．when | D．how |