The number of students who take the bus ______ increased this year.
Answer and explanation
Correct answer: C. has
- Step 1: the number of 後面接複數名詞，但主詞是 number（單數），動詞用單數。
- Step 2: this year 與完成式 has increased 搭配。
Answer
has.
Why not the others: have、are、were不符合題意。
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