The sign "No Smoking" in the subway means passengers ____________ smoke.
| A． |
can |
B． |
should |
C． |
mustn't |
D． |
needn't |
—Let’s climb the mountain.
—I don’t agree. _______ the mountain will make us exhausted.
| A．Climb | B．Climbing |
| C．Climbed | D．Climbs |
—What ______ in your school in the past few years?
—A new library and a playground were built last year.
| A．happens | B．happened |
| C．has happened | D．had happened |
So much homework and so many after-school activities really make the students feel _______. That’s why we should lighten the burden(减负) on students.
| A．pleasant | B．excited |
| C．embarrassed | D．tired |
It was amazing. Let’s find out what was the _______ of the accident.
| A．because | B．excuse |
| C．cause | D．reason |
Why not use stones to build our new house? A house built of stone does not catch fire as easily as ______ made of wood.
| A．one | B．it | C．this | D．that |