About _____ of the students don't like studying online in my class， because they can't discuss with their classmates．（ ）
| A． |
one three |
B． |
one thirds |
C． |
one third |
John is the boy ____saved the little girl from the fire．（ ）
| A． |
when |
B． |
where |
C． |
who |
Although we don't know what was discussed ， we can feel the topic____（ ）
| A． |
has changed |
B． |
was changed |
C． |
has been changed |
I'm sure____our team will win the match．（ ）
| A． |
if |
B． |
that |
C． |
when |
There is a____in our zoo．（ ）
| A． |
pigs |
B． |
panda |
C． |
dogs |
May I do my homework now，dad？
﹣Yes，you____（ ）
| A． |
must |
B． |
may |
C． |
can |