— __________ did you pay for it?
— $10.
| A．How often | B．How many |
| C．How soon | D．How much |
Wasacarinvented_____March4,1876?
A、onB、inC、at
Do you know where _________ some maps?
A、can I buy B、can buy C、I can buy
He doesn’t know _________.
A、to do what B、how to do C、what to do
He also _________ some signs asking for old bikes.
A、put down B、put up C、put off
Study hard, _____you will get better grade.
A、or B、and C、because