He devoted most of his time to his research, believing his hard work would___sooner or later.
| A．put off | B．take off | C．come off | D．pay off |
I regret _____ more time with my grandma before she passed away.
| A．not spending | B．not to spend | C．not spend | D．not have spent |
. Do you know________there is a small river for us to swim in?
| A．what | B．which | C．where | D．that |
They want to employ 90 people, ________ last year.
| A．more than three times | B．three times as many as |
| C．as three times as | D．three times that they did |
She has long been expecting a computer belonging to herself and at last she got_________.
| A．it | B．another | C．one | D．that |
Since then I ________a member of the family and never________from them.
| A．have become; will I separate | B．have become; I will separate |
| C．have been; will I be separated | D．have been; I was separated |