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The young mother couldn’t make herself ___ attention to because the baby was concentrating on his toys.
| A．to pay | B．to be paid | C．paid | D．pay |
—How do you know so much about what’s going on in the countries?
—I’ve got a friend there who keeps me _______.
| A．informing | B．to be informed | C．informed | D．being informed |
_______ with her sister, Mary is even more hardworking and better at her lessons.
| A．Compare | B．To compare | C．Comparing | D．Compared |
_____ get a better score, she has been studying hard all day.
| A．So as to | B．In order to | C．So that | D．In order that |
It was so cold that he had the fire ___________ all night long.
| A．to burn | B．burn | C．burning | D．burned |
_______ an important decision more on emotion（情感）than on reason, you will regret it sooner or later.
| A．Basing | B．Based | C．To base | D．Base |
Without the earth’s atmosphere to protect them, astronauts can be exposed to intense radiation from the sun, ____ them at risk of cancer.
| A．to leave | B．leaving | C．having left | D．left |
Linda had her luggage________ an hour before her plane left.
| A．check | B．checking | C．to check | D．checked |