There will be ______ talk on good manners at the school hall this afternoon．（ ）
A．theB．anC．aD．/
We asked 200 students in our school about whether they wanted a younger brother or sister．Here are the results．
It shows that ________percent of them don't want to have one． This is a big problem．（ ）
A．10B．40C．50D．80
Many students hated to have classes on DingTalk，________they gave it one﹣star reviews（评价）．（ ）
A．soB．orC．butD．while
5G， as a new global network （全球网络） after 3G and 4G， will certainly ________our life in many ways．（ ）
A．copyB．breakC．changeD．control
Many mothers smiled from ear to ear when they got the news that children could go back to school．
That's true． It is the _________that they had been looking forward to．（ ）
A．dayB．periodC．vacationD．festival
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