I didn’t mean ______ anything, but these apples looked so good I couldn’t resist ______ one.
| A.to eat…trying | B.to eat…to trying | 
| C.eating…to try | D.eating…to trying | 
—The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the
 job?
 —____ my students have a try?
| A.Shall | B.Will | C.Could | D.Should | 
If Sanlu Group __________melamine to the milk, the babies ________ too much from kidney stones.
| A.didn’t add; would not suffered | B.hadn’t added; wouldn’t have suffered | 
| C.hasn’t added; wouldn’t have suffered | D.hadn’t added; would have suffered | 
— Are you going to Lloyd’s birthday party on Friday?
 — Only if it ______, he said he was having a picnic party.
| A.wouldn’t rain | B.doesn’t rain | C.won’t rain | D.hadn’t rained | 
—But those are size 44. You might need a smaller size.
 —Yes, I ______ a bit of weight. I have been trying to lose weight!
| A.will have lost | B.should have lost | C.may have lost | D.can’t lose | 
________the problem, he wouldn't have committed those mistakes.
| A.If he understood | B.Had he understood | C.When he had understood | D.If he would understood |