As she’s not here, I suppose she _____ home.
| A．must go | B．must have gone |
| C．might go | D．might be going |
—Shall I give you a ride as you live so far away？
—Thank you.___________.
| A．It couldn’t be better | B．Of course you can |
| C．If you like | D．It’s up to you. |
She was surprised to find the fridge empty；the children _____ everything !
| A．had been eating | B．had eaten |
| C．have eaten | D．have been eating |
There’s a ______in our office that when it’s somebody’s birthday，they bring in a cake for us all to share．
| A．tradition | B．balance | C．concern | D．relationship |
We've offered her the job，but I don’t know ____she’ll accept it．
| A．where | B．what | C．whether | D．which |
The old town has narrow streets and small houses _____are built close to each other．
| A．they | B．where | C．what | D．that |