Theresearchissodesignedthatonc

The research is so designed that once _____ nothing can be done to change it.

A．begins

B．having begun

C．beginning

D．begun

登录免费查看答案和解析

相关试题

--English has a large vocabulary, hasn’t it?
--Yes. _____ more words and expressions and you will find it easier to read and communicate.

A．Know	B．Knowing
C．To know	D．Known

收藏答案/解析

--Come on, please give me some ideas about the project.
--Sorry, with so much work ______ my mind, I always break down.

A．filled	B．filling
C．to fill	D．being filled

收藏答案/解析

After he retired from office, Rogers _______ painting for a while, but soon lost interest.

A．took up	B．saved up
C．kept up	D．drew up

收藏答案/解析

Mum is coming. What present ________ for your birthday?

A．you expect she has got

B．you expect has she got

C．do you expect she has got

D．do you expect has she got

收藏答案/解析

Do you still remember the chicken farm_______ we visited three months ago?

A．where	B．when
C．that	D．what

收藏答案/解析