--- How soon will the boss come back?
---__________ about three days.
| A．For | B．After | C．In | D．During |
Can you make sure ________ he will come here today, Linda?
| A．that | B．which | C．whether | D．what |
—What should we do to prevent H7N9 bird flu?
—We must from crowded places.
| A．come out | B．pass away | C．put out | D．keep away |
—It’s a long story, but you will find that there are few new words in it .
—Good!it will be too hard for children.
| A．So | B．And | C．But | D．Or |
Which is _____ difficult, this one or the other two?
| A．more | B．the more | C．most | D．the most |
—The plane is leaving right now, but Jim hasn't arrived yet.
—Well, he said he _____here on time.
| A．came | B．would come | C．can be | D．will be |