-Did you attend Mary and Tom’s wedding ceremony?
-Yes，but as you know，they________each other no more than 3 months．
| A．knew | B．had known | C．have known | D．have been knowr |
Eating too much fat can ______ heart disease and cause high blood prssure.
| A．result from | B．contribute to | C．attend to | D．devote to |
_____into the house, the thief was soon caught by the police.
| A．Having seen him steal | B．Seen stolen | C．Seen stealing | D．Seeing him steal |
In such a fierce competition, a person has to make every effort if he ______.
| A．has succeeded | B．is to succeed | C．would succeed | D．will succeed |
Only when ______ possible to settle the problem.
| A．does the chief editor come will it be | B．the chief editor comes will it be |
| C．has the chief editor come will it be | D．the chief editor comes it will be |
I was told that there were about 50 foreign students ____ Chinese in the school, most _____ were from Japan.
| A．study; of whom | B．study; of which | C．studying; of which | D．studying; of whom |