Private cars are becoming very popular though most of them still ______too much
| A．pay | B．cost | C．sell | D．spend |
When I got there, theythe old people clean the house.
A、helped
B、are helping
C、were helping
—has Jack been studying English?
—Since he was seven years old.
A、How long B、How often C、When
The little girl has to spend two hoursthe violin every day.
A、to practice playing
B、practicing playing
C、to practice to play
We should read English forthirty minutes every day.
A、at least B、at last C、at first
My father was watching TVthe earthquake happened.
A、as soon as B、while C、when