单项选择 适中0.65 引用1 组卷101
It was difficult for them to keep ________ for hours and they were ________ out.
| A．to run; tiring | B．to run; tired | C．running; tired | D．running; tiring |
18-19八年级下·江苏·期中
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—Just stop ________ a rest, Sue. You keep ________ for two hours!
—But the book is really interesting.
—But the book is really interesting.
| A．having; reading | B．to have; to read | C．having; to read | D．to have; reading |
Over the past 75 years, the UN has kept ________ to make our planet a peaceful and healthy one.
| A．to work | B．working | C．to produce | D．producing |
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