We are at your service. Don’t _______to turn to us if you have any further problems.
| A．beg | B．hesitate | C．desire | D．seek |
In order to make our city green, _________.
| A．it is necessary to have planted many trees | B．many more trees need to plant |
| C．we must plant more trees | D．our city needs more trees |
He was about to tell me the secret _______ someone patted him on the shoulder.
| A．as | B．until | C．while | D．when |
_______ well prepared a gymnast is, he still needs a lot of luck in performing.
| A．Whatever | B．Although | C．No matter | D．However |
_______ Typhoon Morakot struck Taiwan led to water and electricity shortage on the island.
| A．Which | B．That | C．What | D．As |
—Did anybody sign your petition?
—Yes. We had a hundred signatures,________.
| A．if no more | B．if not more | C．if moreover | D．if not larger |