问题

The special medicine for the disease was difficult to find though ________ everywhere.

A:sought
B:having sought
C:being sought
D:having been sought

正确答案是：

同类题型

With the Internet widely used, a(an)___change has taken place in the way people communicate with one another.

We ＿＿ that you would fix the TV set this week.— I’m sorry. I ＿＿ to, but I’ve been too busy.

“When did you ________, David” “Ten minutes ago.”

She said she couldn’t finish the work in time, _______?

2，Columbus_______ on the of theBahama islands, but he mistook it for an island off India.