问题描述：
no matter how many difficulties we have
适当形式填空
No matter how many difficulties we have,I believe all problems can_______(solve) in the end.
Mobile phones should __________ (keep) off during the meeting.
Teenagers under 18 must _______________(not allow) to smoke or drink.
Many parents think learning from books must ______________ (put) first,so teenagers should______________ (not encourage) to work part- time.
适当形式填空
No matter how many difficulties we have,I believe all problems can_______(solve) in the end.
Mobile phones should __________ (keep) off during the meeting.
Teenagers under 18 must _______________(not allow) to smoke or drink.
Many parents think learning from books must ______________ (put) first,so teenagers should______________ (not encourage) to work part- time.
问题解答：
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