I don’t know the reason _________ he’s come so late.
| A．/ | B．for which | C．why | D．all the above |
The CDs are on sale! Buy one and you get completely free.
| A．other | B．others | C．one | D．ones |
–I am so sorry to have come late for the meeting.
-It’s not your fault. With rush-hour traffic and heavy rain, it is no wonder you were late.
| A．a; a | B．the; the | C．/; / | D．/; a |
The art show was being a failure; it was a great success.
| A．far from | B．along with | C．next to | D．regardless of |
–I wonder how much you charge for your services.
-The first two are free the third costs $30.
| A．while | B．until | C．when | D．before |
The place the bridge is supposed to be built should be the cross river traffic is the heaviest.
| A．which; where | B．at which; which | C．at which; where | D．which; in which |