She got so _____in her work that she didn’t notice anyone passing her.
| A．devoted | B．concentrated | C．addicted | D．absorbed |
The specialist, ______ some of his assistants, ____ to attend our discussion.
| A．and; is | B．or; are | C．as well as; is | D．except for; are |
Smiles around the world _____ be false, ______ other feelings like anger, fear or worry.
| A．must; hide | B．must; hiding | C．can; hide | D．can; hiding |
Using Dr Yuang's hybrid rice, nowadays farmers are producing harvests ________ before.
| A．as twice large as | B．twice as much as |
| C．twice as large as | D．as twice much as |
Our football team _____ every match so far this year, but we still have three more games to play.
| A．wins | B．was winning | C．had won | D．has won |
I’m afraid I am not fit for the job, for it is ______calling for much patience.
| A．which | B．what | C．one | D．that |