Karaoke, which was invented by the Japanese, ______ both wonders and problems.
| A．has been produced | B．was produced | C．produced | D．has produced |
The doctor was ______ immediately the little boy fell off a ladder and hurt himself.
| A．asked for | B．sent for | C．waited for | D．cared for |
So many people wanted to go to the game that another train had to be ______.
| A．carried on | B．got on | C．put on | D．turned on |
—What do you think of our plan?
—It will certainly ______; it is a great idea.
| A．turn into | B．pay back | C．pay for | D．pay off |
－The enemy spy was found at last. －Really? Where ________ himself?
| A．had he hidden | B．did he hide | C．has he hidden | D．was he hidden |
—I suppose the young beautiful actress is about 20 years old.
— ________ ! She is still a college student.
| A．You guess it | B．You guessed it | C．You have it guessed | D．You’re guessing it |