The driver can adjust the heating in winter and the air conditioning in summer to suit his own _____.
| A．leisure | B．preference | C．convenience | D．selection |
We were delayed at the airport．Otherwise，wehere by lunch．
| A．must have been | B．could be |
| C．should be | D．would have been |
According to the latest study，most traffic accidentsbe prevented if drivers are careful enough．
| A．must | B．can | C．have to | D．need |
He never complains about the difficulties he has in life．，he always has ways to overcome them．
| A．However | B．Otherwise | C．Instead | D．Therefore |
Jimmy managed to make a(n) profit out of the deal，for he had got such a good opportunity．
| A．handsome | B．pretty | C．attractive | D．beautiful |
We all goodbye to my father as he was on the train to Beijing．
| A．made | B．shook | C．Paid | D．waved |