When the big bills for mother's hospital care came, father was glad he had money in the bank to _____.
| A．fall short of | B．fall through |
| C．fall back on | D．fall in with |
The fire made _____ difficult to rescue the people trapped under the ruins in the earthquake.
| A．/ | B．this | C．that | D．it |
The mother waved to her daughter until the train .
| A．out of sight | B．got out of sight |
| C．caught sight | D．lost sight |
He hurried to the station only that the train had left.
| A．to find | B．finding | C．found | D．to have found |
It was Asimov was eleven years old his talent for writing became obvious.
| A．that, when | B．When, that |
| C．when, when | D．when, which |
We were having lunch when the clock ___________ twelve.
| A．beat | B．impressed | C．hit | D．struck |