11. She looks forward every spring to _______ the flower-lined garden.
A. visit B. paying a visit
C. walk in D. walking in
12. To test eggs, _______ them in a bowl of water: if they float they’re bad, if they sink they’re good.
A. put B. putting
C. to put D. to be putting
13. “Where is David?” “He is upstairs ______ ready to go out.”
A. to get B. getting
C. to be getting D. having got
14. “Mum, why do you always make me eat an egg every day?” “________ enough protein and nutrition as you are growing up.”
A. Get B. Getting
C. To get D. to be getting
15. He was reading his book, completely _______ to the world.
A. lost B. losing
C. to lose D. to have lost
16. We looked everywhere for the keys, but they are nowhere _______.
A. to find B. to have found
C. to be found D. being found
17. The boy wanted to ride his bicycle in the street, but his mother told him _______.
A. not to B. not to do
C. not do it D. do not do
18. A cook will be immediately fired if he is found _______ in the kitchen.
A. smoke B. smoking
C. to smoke D. smoked
19. Finding her car stolen, _______.
A. a policeman was asked to help
B. the area was searching thoroughly
C. it was looked for everywhere
D. she hurried to a policeman for help
20. “How do you deal with the disagreement between the company and the customers?” “The key ______ the problem is to meet the demand ______ by the customers.”
A. to solving, making B. to solving, made
C. to solve, making D. to solve, made
【答案与解析】
11. 选 D。look forward to 意为“期盼”，其中 to 是介词，后接动词要用动名词。注意不能选 B，因为 pay a visit 不能带 the flower-lined garden 作宾语，假若在 paying a visit 后加上介词 to，则可选 B。
12. 选A。句首的 to test eggs 为目的状语，填空句为祈使句谓语，故要用动词原形。
13. 选B。现在分词短语表伴随。
14. 选C。to get enough protein and nutrition 表目的。
15. 选A。（be） lost to sth 为习语，意为“不再受某事物的影响”、“将某事物置之度外”。
16. 选C。因keys 与 find 是被动关系。
17. 选A。不定式的否定式总是将否定词 not 置于不定式符号 to 之前，而不能置于其后，同时结合 tell sb （not） to do sth 这一结构可排除选项 C、D。当不定式的动词是前面已出现过的相同的动词时，为避免重复，通常省略该不定式而只保留不定式符号 to。
18. 选B。find 后可接现在分词（表示动作在进行）或过去分词（表被动关系）作宾语补足语，但是不接不定式。另外，由于he 与 smoke 是主动关系，故选 B。
19. 选D。非谓语动词作状语时，其逻辑主语就是句子主语。比较四个选项，finding her car stolen 的逻辑主语显然是 she，而不是 a policeman, the area, it 等，故选 D。
20. 选B。the key to… 意为“……的关键”，其中的 to 是介词，不是不定式符号，若后接动词要用动名词。另一方面，名词 demand 与 make 是被动关系（make demands 提出要求），同时根据句中的 by the customers，可确定答案选 B。
