Only after they had carried out over ten experiments ______ the decision.
| A．they reached | B．they reach | C．did they reach | D．do they reach |
If I had__________ , I’d visit Europe, stopping at all the small interesting places.
A. a logn enough holiday B an enough long holiday
C. a holiday enough long D. a long holiday enough
The news about the terrible flood there greatly discouraged __________ there for a sightseeing.
| A．us from going | B．us to go | C．our going | D．our to go |
He's unlucky,and he's always suffering____________ luck one after another.
| A．a sick | B．an ill | C．sick | D．ill |
If you ____________ stop smoking, you can only expect to have a bad cough.
| A．won’t | B．would not | C．do not | D．can not |
__________ , we'll come to see you again.
| A．If time will permit | B．Time permits |
| C．Time permitting | D．Time permited |