Dr. Zhong Nanshan is a pioneer has made a lot of contributions （贡献） in the field of medical science．（ ）
A．whichB．whoC．whoseD．what
Look at the lady in a white T﹣shirt，is she Ms．Yang？
It____be her，she has gone to the library．（ ）
| A． |
mustn't |
B． |
may |
C． |
can't |
D． |
should |
Cindy，is this___new bike？
No，it is not my bike，____is over there．（ ）
| A． |
you；mine |
B． |
your；my |
C． |
your；mine |
D． |
yours；me |
Is Tony____honest boy？
Yes．I think he is____most helpful boy in our class．（ ）
| A． |
a；the |
B． |
an；an |
C． |
an；the |
D． |
the；an |
Would you please go shopping with us，Li Ming？
Oh，sorry．I am up to the ears in my work．
（ ）
| A． |
am busy with |
B． |
am interested in |
| C． |
make progress in |
D． |
make mistakes in |
The little girl has to take care of her grandmother and grandfather，when her parents are out．（ ）
| A． |
look into |
B． |
look for |
| C． |
look up |
D． |
look after． |