Question

---By the way, how many of us can attend the meeting?
---The number of the students to attend the meeting _____ fifty.

A．is

B．has

C．a(chǎn)re

D．have

Answer 1

A

The number of+復(fù)數(shù)名詞，作主語(yǔ)，謂語(yǔ)動(dòng)詞用單數(shù)，且根據(jù)句意：參加會(huì)議的學(xué)生數(shù)目是五十。所以用A。