Driving the halfway I _____ my car was out of gas.
| A．noticed | B．find | C．found out | D．saw |
You'd better _______ your score and see if you have passed the exam.
| A．add up | B．add to |
| C．add up to | D．add |
The physics teacher once said that we first _____the lightning followed by thunders because light ______ faster than sound.
| A．see; traveled | B．saw; traveled |
| C．saw; travels | D．see; travels |
Only _______ as an interpreter _______ how important it is to grasp English.
| A．when did I work; I realized |
| B．when I worked; I realized |
| C．when did I work; did I realize |
| D．when I worked; did I realize |
_______ that they may eventually reduce the amount of labor needed on construction sites by 90 percent.
| A．Such construction robots are clever |
| B．So clever the construction robots are |
| C．So clever are the construction robots |
| D．Such clever construction robots are |
Mr. White promised to help me and _______ the next day.
| A．neither he did | B．so he did |
| C．neither did he | D．so did he |