问题

The split between humans and living apes isthought by some scholars ____ 15 to 20 million years ago

A:are
B:were
C:do
D:did

正确答案是：

同类题型

The woman ______ a white coat is Miss Gao.

What’s ______population of China—China has_____ population of 1.3 billion.

The job is great _________ salaryIt has its disadvantages, though.

Manycompanies would prefer to employ people who have gained ______ experience forthe work

The girl had hardly rung the bell the door was opened suddenly, and her friend rushed out to greet her