Have you known Dr. Jackson for a long time?
-Yes, since shethe Chinese Society.
| A． | has joined | B． | joins | C． | had joined | D． | joined |
—He_______to the meeting. Have you informed him of it?
—Sorry. I _______to.
| A．hasn’t come; am going | B．didn’t come; have forgotten |
| C．hasn’t come; forgot | D．doesn’t come; will have |
It is not enough only_______the rules of grammar if you want to learn English well.
| A．keeping in the mind | B．to keep in mind |
| C．to keep in your mind | D．keeping in your mind |
He _______the person referred to be put in prison.
| A．said | B．demanded | C．agreed | D．thought |
________you I owe a thousand apologies
having doubted your ability.
| A．For; to | B．To; for | C．For; for | D．To; to |
_____at in this way, the present situation about birds flue doesn’t seem so disappointing.
| A．Looking | B．Looked | C．Having looked | D．To look |