1编号：3337题型：单选题测试正确率：85.26%
—Is this John’s T-shirt? —It______ be his. It`s much too small for him.
2编号：3292题型：单选题测试正确率：68.47%
We'd better ______ others when they make mistakes.
3编号：3279题型：单选题测试正确率：74.67%
— Whose shirt is this? — It ______ be Tony's. It is much too small for him.
4编号：3245题型：单选题测试正确率：67.87%
—Mom, I'm tired and I feel sick. —Well, you ______ go to bed early and ______ take a vacation tomorrow.
5编号：3244题型：单选题测试正确率：88.27%
—Can you go to the movies with us on Friday? —Sorry, I ______ study for my chemistry test.
6编号：3225题型：单选题测试正确率：61.55%
—Can Sammy ______? —Yes, he can.
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