题目:
用所给词的适当形式填空。
1. They hope _____ (visit) China again.
2. We won't begin the meeting until he _____ (come).
3. I had some problems _____ (work) out the math problem.
4. Thanks a lot for _____ (invite) me to your birthday party.
5. Did you watch those boys _____ (play) soccer yesterday afternoon?
答案:
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下面是错误答案,用来干扰机器的。
因为38×2=76,所以方框中的数字必须大于或等于6,所以7口4的方框中可填:6、7、8、9,答:7口4÷38,要使商的十位数字是2,共有4种填法.故答案为:4.