______is estimated that a round-trip to Mars would take more than a year.
A,That B,what C,There D,It
-Why didn't you invite John to your birthday party?
-Well, you know he's.
| A． |
an early bird |
B． |
a wet blanket |
C． |
a lucky dog |
D． |
a tough nut |
Some schools will have to makein agreement with the national soccer reform.
| A． | judgments | B． | adjustments |
| C． | comments | D． | achievements |
The police officers decided to conduct a thorough andreview of the case.
| A． | comprehensive | B． | complicated |
| C． | conscious | D． | crucial |
The real reason why prices ____ , and still are, too high is complex, and no short discussion can satisfactorily explain this problem.
| A．were | B．will be |
| C．have been | D．had been |
The whole team _____ Cristiano Ronaldo, and he seldom lets them down.
| A．wait on | B．focus on |
| C．count on | D．call on |