Some volunteers plan to_____ a survey about the school finishing time．（ ）
A．find outB．sell outC．take outD．carry out
Get up early，_____ you will miss your train．（ ）
| A． |
or |
B． |
and |
C． |
but |
I _____ a math problem with Joe when Mike called me up．（ ）
| A． |
have discussed |
B． |
discussed |
C． |
was discussing |
The nurse _____ is looking after the old man is Tom's sister．（ ）
| A． |
which |
B． |
who |
C． |
what |
She is_______famous singer in China and has many fans．（ ）
| A． |
the |
B． |
a |
C． |
an |
Helen's mother always goes shopping____ Friday afternoons．（ ）
| A． |
in |
B． |
on |
C． |
at |