Only after he had spent several nights working on the math problem _______ to wonder whether the problem was wrongly set.
| A．that he began | B．did he begin | C．then he began | D．so that he began |
We tend to ________ happiness with freedom, but, as a psychotherapist and writer has observed, without obstacles to our desires it’s harder to know what we want, or where we’re heading.
| A．combine | B．compare | C．equip | D．equate |
What little money he did have ________ on a record selected with extreme care which became, to his way of thinking, a possession close to his heart.
| A．spent | B．been spent |
| C．was spent | D．to spend |
Most of the visitors were happy just sitting around in the shade, _________ it had been a long, dusty journey on the train.
| A．for | B．so | C．but | D．Or |
— Doesn’t he lose heart even if the experiment hasn’t been working out?
— ________. Nothing defeats him.
| A．It depends | B．You bet |
| C．By no means | D．Not a little |
Malaysia Airline Flight MH370 seemed to have been _______to only a mystery after so long and hopeless a search.
| A．reduced | B．formed |
| C．trapped | D．absorbed |