﹣ Did you notice in her office？
﹣ Yes． She was going over our writing．（ ）
A．what was Miss Lin doing
B．what Miss Lin was doing
C．what does Miss Lin do
D．what Miss Lin does
Professor Tu Youyou never stops doing research on Chinese medicine，______？（ ）
| A． |
is she |
B． |
does she |
| C． |
isn't she |
D． |
doesn't she |
The two companies decided to work together ______ they had common interest．（ ）
| A． |
because |
B． |
unless |
C． |
but |
D． |
or |
______ I park my car here for a while？
No，you mustn't．Do you see the sign"NO PARKING"？（ ）
| A． |
Would |
B． |
May |
C． |
Must |
D． |
Should |
The workers are busy _______ windows to the new building these days．（ ）
| A． |
fix |
B． |
fixed |
C． |
fixing |
D． |
to fix |
Vivian refuses ______ her children to the weekend training centre for extra classes．（ ）
| A． |
to send |
B． |
sending |
C． |
sent |
D． |
sends |