Keep ______, _______ maybe one day you can join us.
| A．study; but | B．studying; but |
| C．studying; and | D．study; and |
I ________ go to the theatre, because I don’t like operas at all.
| A．always | B．often | C．sometimes | D．never |
Write down the phone number, __________ you’ll forget it.
| A．so | B．and | C．but | D．or |
We can get fresh water from rain, from rivers, or from ________ the ground.
| A．across | B．under | C．over | D．off |
They develop their skills _________ they can do things better and better.
| A．however | B．because | C．since | D．so that |
He was late this morning, because the bus was too ________ for him to get on.
| A．quiet | B．tidy | C．crowded | D．noisy |