1. The house still needed a lot of work, but ___ the kitchen was finished.
A. instead B. altogether C. at once D. at least
2. Let’s learn to use the problem we are facing ________ a stepping-stone to future success.
A. to B. for C. as D. by
3. If you really have to leave during the meeting, you’d better leave ____ the back door.
A. for B. by C. across D. out
4. Leaves are found on all kinds of trees, but they differ greatly size and shape.
A. on B. from C. by D. in
5. Scientists are convinced the positive effect of laughter physical and mental health.
A. of; at B. by; in C. of; on D. on; at
6. Are you ready for
Yes. 1 want the girls to experience that______they are young.
A. while B. until C. if D. before
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