Please keep us __________ of any change of your address as soon as possible.
| A．informing |
| B．informed |
| C．being informed |
| D．to inform |
As we all know, Jack is experienced _____ the problem of this kind.
| A．to work out | B．at working | C．at working out | D．for working out |
I could have helped him out, to tell the truth, I _____ too busy.
| A．am | B．was | C．have been | D．had been |
Badminton is a _____ by an Englishman.
| A．game invented | B．play invented |
| C．match inventing | D．match invented |
– How much do you _____ mending a pair of shoes?
-- $ 15.
| A．ask | B．spend for | C．charge for | D．pay |
The swimming pool is 80 meters _____ and 40 meters _______.
| A．in long; in wide | B．in length; in width | C．long; in width | D．in length; wide |