Jack wasn't allowed to go into the sports club ______ he left his membership card at home.
| A．though | B．as | C．before | D．Until |
The little boy has never been to Beijing, ________he ?
| A．haven’t | B．don’t | C．has | D．Does |
She _______ in Zhuzhou for ten years.
| A．will work | B．work | C．was working | D．has worked |
______ he did was quite right.
| A．What | B．Which | C． That | D．Who |
Nowadays, most young people enjoy ______ on the Internet.
| A．chat | B．to chat | C．chatting | D．chatted |
The girl often helps her best friend, ______ is not good at English.
| A．which | B．who | C．what | D．where |