The food safety is a serious ____ in many countries． People should try to solve it．（ ）
| A． |
subject |
B． |
program |
C． |
problem |
D． |
opinion |
﹣﹣﹣Do you know ？
﹣﹣﹣Since last years．（ ）
| A． |
how long has he lived here |
B． |
how long he lived here |
| C． |
how long did he live here |
D． |
how long he has lived here |
Tony， never that again!（ ）
| A． |
does |
B． |
do |
C． |
did |
D． |
doing |
The team leader asked him to go and care of the old couple．（ ）
A
| A． |
．take |
B． |
taken |
C． |
taking |
D． |
takes |
A letter to you by the boss in one or two weeks．（ ）
| A． |
is sent |
B． |
will send |
C． |
sends |
D． |
will be sent |
Write it down you forget it．（ ）
| A． |
after |
B． |
until |
C． |
before |
D． |
as soon as |