How many times have you found yourself arriving at school to start your day, only ________ that you left your homework at home?
| A．having discovered | B．discovering | C．to discover | D．discover |
He asked whether we were ________ women taking part in political activities.
| A．in place of | B．in face of | C．in favor of | D．in terms of |
—How about your travel?
—You can hardly imagine what difficulty we have had ___________ the vast desert.
| A．exploring | B．explored | C．to explore | D．explore |
Hissisterlefthomein1998,and_________since then.
| A．hadnotbeenheard | B．hasnotbeenheardof |
| C．hadnotheardof | D．hasnotheardof |
Thepoliceman’s_________trafficdirectionsmadeallthedriversquite ___________.
| A．confused;confused | B．confusing;confusing |
| C．confused;confusing | D．confusing;confused |
The president is talking on ____ phone with astronauts in ____ space.
| A．不填；the | B．the; the | C．the; 不填 | D．不填；不填 |