The students are busy making____ fou the lecture because they will___the competitionA\preparing;attend B\preparations;attend to c\preparations;take part in D\preparation;join

The students are busy making____ fou the lecture because they will___the competitionA\preparing;attend B\preparations;attend to c\preparations;take part in D\preparation;join
The students are busy making____ fou the lecture because they will___the competition
A\preparing;attend B\preparations;attend to c\preparations;take part in D\preparation;join

The students are busy making____ fou the lecture because they will___the competitionA\preparing;attend B\preparations;attend to c\preparations;take part in D\preparation;join
选择C.
make preparations 意思是：作准备 preparation 是可数名词,所以用了复数.
take part in 参加某项活动 （竞赛是一种活动）
join 是参军、入党,或加入某一组织.

c

A
原因:preparation是不可数名词，所以不能加s.B、C不对。而因为竞赛不能用join,又是比较正式的场合所以用attend.

c