1. 27. Several families of birds feed primarily ______ flying insects and have developed long wings and wide-opening mouths. A. on B. to C. with D. up ...

14. The army in pursuit of enemy right after the attack. A. set out B. set off C. set down D. set on ...

5. They always keep corresponding each other. A. to B. with C. as D. for ...

16. She devoted all her energies to care of homeless people. A. taking B. take C. taken D. be taken ...

2. The bus driver is _____for the passengers’ safety. A. bounden B. answerable C. responsible D. accountable ...

18. 18 My brother’s plans are very ________; he wants to master English, French and Spanish before he is sixteen. A. arbitrary B. aggressive C. ambitious D. abundant ...

12. 11. You would be ______ a risk to let your child go to school by himself. A. omitting B. attaching C. affording D. running ...

6. 2. He didn’t have time to read the report word for word: he just ______ it. A. skimmed B. observed C. overlooked D. glanced ...

1. 4. What a lovely party! It’s worth ______ all my life. A. remembering B. to remember C. to be remembered D. being remembered ...

16. 4. The president promised to keep all the board members _______ of how the negotiations were going on. A. inform B. informing C. be informed D. informed ...