--- I rang you at about ten, but there was no reply.
--- Oh, that was probably ____ I was seeing the doctor.
| A．when | B．why | C．what | D．that |
---Hello, Golden Bay Resort,Can I help you ?
--- Do you have a room _______ for this weekend?
| A．available. | B．useful | C． possible | D．empty |
My MP4 has disappeared. Who _______ have taken it away?
| A．could. | B．should | C．must | D．might |
The government has taken some measures to solve the shortage of electricity, but it may be some time ______ the situation improves.
| A．since | B．when | C． before | D． unless |
He reminded me that the poor weather may have ＿＿＿ the small crowd.
| A．turned up | B．spied on | C．accounted for | D．came across |
I have no idea ＿＿＿ David is in trouble, he will turn to you for help.
| A．if | B．that | C．when | D．that if |