21. – Mom, I came first in the competition. -- Well done! ________.
A. Keep it up B. Take it easy C. Catch it D. Hold it
22. Mr Smith _____the grammar book meant for senior high school students and will almost finish it. A.was writing B.has written C.has been written D.has been writing
23. When you do an experiment, it is important that you have _______ patience to observe and record ______ whole process of the experiment
A.a ; a B.the; the C.the ; a D./; the
24. – What’s the matter? Your eyes look red. -- My eyes haven’t ______ the new glass yet.
A.applied to B.adjusted to C.accessed to D.approached to