226. Einstein lived the rest of his life quietly in America and _____ American nationality in 1940.
| A．bought | B．took part in | C．joined | D．Took |
We must prepare ourselves for the worst we are at a loss when meeting with difficulties .
| A．after | B．before | C．as | D．since |
I supported him in time , otherwise he off the bike .
| A．might fall | B．would fall |
| C．would have fallen | D．should have fallen |
His behavior at the party last night seemed rather .Many of us were quite surprised .
| A．out of practice | B．out of place |
| C．out of politeness | D．out of pity |
It’s too late to go shopping at this hour ; ,it’s beginning to rain .
| A．except | B．and | C．besides | D．but |
As unemployment is very high nowadays , it’s very difficult for people to find work .
| A．the; 不填 | B．the ; a | C．不填；不填 | D．an; the |