— Where is John? — He _____ in the library.
| A．should be | B．must be | C．can be | D．must have been |
China has got a good ________ for fighting against the flu with its careful and smooth organization.
| A．reputation | B．influence | C．impression | D．knowledge |
—Bob, look what you have done! You ruined the experiment.
—It’s not my fault. I just carried out the instructions _____.
| A．as told | B．as telling me | C．as telling | D．as I told |
He asked us to __________him __________carrying through their plan.
| A．assist; with | B．help; to | C．assist; in | D．help; with |
According to the local newspaper, _____ electric shock happening in the kindergarten came as _____ big shock to the public.
| A．不填；the | B．the；a | C．不填；a | D．the；the |
—How can I get more information about your products?
—_____ to call the sales office or visit our website.
| A．Go ahead | B．You are wanted | C．You need | D．You are welcome |