问题

The zoo keepers is worried because the number of visitors __ smallerand smaller.

A:become
B:became
C:is becoming
D:have become;

正确答案是：

同类题型

pe of finding the missing plane______, the relevant authorities declared the crew and passengers ______

We won’t give up ________ we should fail ten times

Jemmy likes to hang about in the street and doesn’t do his job. — I _____ he will be dismissed by his boss. [ ]

icant agreements were passed in the APEC meetings in Beijing on Tuesday, _____attracted worldwide attention.

The phonetic transcription for the word “orange” is_________.