问题

The number of English learners ________ increased.
A:has
B:have
C:is
D:are;
B:have
C:is
D:are;
正确答案是:
同类题型
We can’t wait. We have to_______ the direction and the distance before we take action.
st learn to read people, ______ will be necessary if you work in a team.
Only when I read this story for a second time _________to appreciate its beauty.
She devoted herself__________to her research and it earned her a good reputation in her field[ ]