题目内容：

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，从 1 ~ 15 各题所给的 A、B、C 和 D  项中选出最佳选项，并在答题卡上将该项涂黑。

On January 27, in order to win the new pneumonia Resistance War（抗击新型肺炎战), the Ministry of Education issued(公布)a notice on______________off the start time of school in spring 2020.

However, many parents worry______________the delay of the start of school may affect children’s studies. If they have ______________a long winter vacation, children will not gain any knowledge, read books ______________study at all. They may forget what they______________before. Staying at home for a long time will make them keep eating, sleeping  and  playing. According  to parents, it’s a terrible  thing ______________seriously  affects their children's physical and mental health.

In short, the close of school influences learning and ______________bad habits, so how should we avoid these problems? Local education departments have also issued a notice, that is,______________online teaching and create a network platform (平台), so students can learn at home ______________computer or mobile network.

This method can not only keep students indoors without worrying about the infection(感染) of the disease, but also make them _______________at home, improve their learning ability, and truly achieve “no suspension of classes(停学不停课)”. Both the _______________lesson resources and the platform itself are useful, and_______________ by parents and teachers.

Of course, it is also necessary to teach children about________________knowledge, especially tips on how to keep away from touching virus and some _______________popular science. At the same time, children should do exercises to keep _______________healthy at home.

1.A.puts B.putting C.put D.was put

2.A.who B.which C.what D.that

3.A.such B.so C.very D.quite

4.A.and B.or C.but D.so

5.A.has learned B.had learned C.have learned D.are learning

6.A.where B.which C.who D.how

7.A.develop B.developing C.develops D.developed

8.A.to organize B.organizes C.organizing D.organized

9.A.in B.without C.through D.on

10.A.to study B.studies C.studying D.study

11.A.recorded B.recording C.record D.records

12.A.welcome B.welcomes C.are welcomed D.is welcomed

13.A.healthy B.healthily C.healthier D.health

14.A.the other B.other C.others D.another

15.A.physics B.physical C.physically D.physician