21. It’s strange that the boy doesn’t have anything ________ his father .
A. in common B. the same with C. similar with D. such as
22. In dealing with public relations, we should make efforts to prevent the ____in personality.
A. contact B. contrast C. connection D. conflict
23. Only when you can find peace in your heart _____good relationships with others.
A. will you keep B. you will keep C. you kept D. did you keep
24. ________carefully if any change occurs when doing experiments in the lab..
A. Observed B. To observe C. Observe D. Observing
25. All things _______, I think we ought to offer the job to the man having the capability.
A. considering B. considered C. to consider D. being considered
26. --- You didn’t wait for Mr.Smith last night, did you?
-- No, but We _______. He didn’t return home at all.
A. couldn’t have waited B. needn’t wait
C. didn’t need to wait D. should wait
