—Sandy，can you tell me ________?
—Sorry，I’ve no idea．
A．how many guests have been here B．when is the party
C．why did they come D．where will they leave
I don’t know the teacher ________ is talking with Miss Wang．
A．what B．whom C．which D．who
If I find his phone number，I ________ you．
A．tell B．told C．will tell D．have told
People often go skating in ________ winter．
A．/ B．a C．an D．the
．—Has your father finished his report?
—Sorry，I don’t know．He ________ it this morning．
A．was writing B．wrote C．has written D．had written
—Could you please come to the museum with me this afternoon?
—Sorry，I ________．I have to take a piano lesson at 2 pm．
A．couldn’t B．mustn’t C．can’t D．needn’t
