1：Where is Jeff?I'm not sure .He be playing football on the

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1：Where is Jeff?I'm not sure .He be playing football on the playground.
A:need B:might C:must D:can
2：More and more young people are trying to do something the old.
A:served B:to serve C:serve D:serves
请简要批注理由.因为明天老师要叫说出理由.所以想确认一下.

1：Where is Jeff? ~I'm not sure .He ? be playing football on the playground.
A:need B:might C:must D:can
答案：B
might 可能,在此表示推测.
2：More and more young people are trying to do something ? the old.
A:served B:to serve C:serve D:serves
答案：B
动词不定式作目的状语.
祝你学习进步,更上一层楼!(*^__^*)
有不会的可以再问我:）

Where's Jeff?I'm not sure. Where is Jeff?——I'm not sure.M____ he is at home or he m____ I'm not sure I'm skilled at playing football. The light is on in his room ,I'm sure he ___back A.must be B —Do you know where my friend is?—I'm not sure.He ____ in the I'm not sure I'm skilled at playing football. she - Can he arrive on time? - . But I’m not sure. A. He must be Tom,where is your father I'm not sure .He _____ in his offic Where is Robert?He ____(play)football on the playground. i'm playing football (in the playground) tom is He be married,but I'm not sure. Are you coming to Jeff's party?I'm not sure.I——go to the con