Jack has learned more about teamwork（团队合作） _______ he joined the soccer team．（ ）
| A． |
until |
B． |
since |
C． |
while |
D． |
though |
﹣Who was hurt in the traffic accident？
﹣ ．（ ）
A．NoneB．No oneC．Nothing
There were many people over there．He asked ．（ ）
A．what happenedB．what was happened
C．what did happen
She is poor afford the expensive suit．（ ）
A．so，thatB．enough，toC．too，to
He the city since he graduated from college．（ ）
A．has leftB．left
C．has been away from
﹣Thanks for cleaning the room，boy．
﹣ ．In fact，it's my to do so．（ ）
A．Not at all，dutyB．All right，work
C．OK，job