— _______ no ad during TV plays.
—Great move! I cannot tolerate those annoying ads appearing every several minutes.
| A．There is said to have | B．It is said to have |
| C．There is said to be | D．It is said to be |
--- Remember, Dad, Thomas Edison got bad grades in school, too.
--- Stay in your room until you’ve _____ the electric lamp.
A invented B discovered C made D imagined
There isn’t much time_____ . shall we go now?
A leaving B to leave C being leftD left
____ he came back home that we knew what had happened .
| A．When it was | B．It was when | C．Was it when | D．When was it |
It was the training _____ he had as a young man _____ made him such a good engineer.
| A．what ; that | B．that ; what | C．that ; which | D．which : that |
It was _____ he said _____ disappointed me at that time.
| A．what ; that | B．that ; that | C．what ; what | D．that ; what |