单选题

1 You can't get across the river ___ by swimming.

单选题 8 The bossy manager is always finding fault with his ___.

单选题 2 Water encourages the ___ of iron and oxygen to form rust.

单选题 5 She was very interested in the work of certain charities, and made a regular ___ to them.

单选题 3 He often talks as if he ___ my father.

单选题 7 He was afraid he would have to ___ her invitation to the party.

单选题 6 During the ___ two decades, research has greatly expanded our knowledge about sleep and dreams.

单选题 4 Until the beginning of the Industrial Revolution, man's knowledge of the physical world ___.

单选题 9 You'd better ___ the sleeves of this coat; they are too long.