问题

of my sisters are experts in agriculture. Helping the farmers improve their farming techniques _their duty.

A:Each; are
B:Both; is
C:Neither; are
D:None; is

正确答案是：

标签： my , their

同类题型

Teenagers _______ allowed to drive in the street ．

Did you read a book about customs last week?– Yes, I found ______ very useful to know the customs of foreign countries.

You can ______ music here.—Yes. But I don’t like the music. May I listen to the CDCDs by S.H.E?

The school days are busy enough, yetthe Taylors try hard to fit as much aspossible their kids’ lives. [ ]

Hello, _______ I speak to Lily? -Hold on, please.