1£®__Determined__(determine) to get ahead of the others in studies, he works day and night.

2£®I thought I'd drop in __on__ you while I was passing.

3£®If a student lacks the __motivation__(motivate) to study, he or she will quickly be __tired__(tire) of studying.

4£®Word came __that__ at least 60 people were killed in the traffic accident.

5£®I am so pleased __to_hear__(hear) from you and am writing to tell you something about my farm.

6£®It is not wise for you to spend a lot of time __playing__(play) computer.

7£®As far as I am __concerned__(concern), only by studying hard at ordinary time can you succeed eventually.

8£®The man was sentenced to prison for five years because he had given __away__ some national military secrets to the enemy.

9£®He ran so quickly __that__ we couldn't keep up with him.

10£®It is rude of you __to_speak__(speak) with your mouth full.