The two dogs started to fight, so we tried to _____ them.
| A．split | B．separate | C．tear | D．divide |
--What great changes! It’s years since we_____ each other last time .
-- Believe it or not, It’s the second time that we _____a face –to- face talk
| A．met; had had | B．have met; had |
| C．had been; had | D．met; have had |
______the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
| A．If | B．While | C．Because | D．As |
_________ you may have, you should gather your courage to face the challenge.
| A．However a serious problem | B．What a serious problem |
| C．However serious a problem | D．What serious a problem |
He made another wonderful discovery, _______ of great importance to science.
| A．which I think | B．which I think it | C．which I think is | D．I think which is |
These kinds of shoes ________ well.
| A．were not sold | B．won't be sold | C．are not sold | D．don't sell |