________ H7N9 is a deadly virus, it is still safe to eat thoroughlycooked chicken.
| A．Until | B．While |
| C．If | D．Since |
The stranger shook me by the hand warmly ___ he were to say he knew me well.
| A．even if | B．when | C．if | D．as if |
The reason _____ he refused to attend the meeting was that they didn’t give him an invitation earlier.
| A．how | B．which | C．why | D．because |
It is _______ he had to send his brother to hospital _______ he was late.
| A．that; so | B．for; that | C．because; so | D．because; that |
September 11, 2001 is the day ______ we will never forget.
| A．that | B．when | C．on which | D．on that |
How do you _______it and what should you ________it?
| A．deal with;do with | B．deal with;deal with |
| C．do with;do with | D．do with;deal with |