When the flood broke out, the little girl clung to a tree and managed to ____.
A. keep on
B. hold on
C. stay on
D. go on
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Do’t ___ the little boy___the garden; he’ll pull up all the flowers.
A. let…in
B. make…in
C. let…loose on
D. make…loose on
Lack of money and lack of machinery are the two major ____ on the growth of this factory; that’s why it remains the same as it was ten years ago.
A. restrains
B. restraints
C. restructions
D. restless
She watched him ___ all the handles and gears in his automobile until she thought she could run it herself.
A. control
B. to control
C. to manipulate
D. manipulate
It is quite possible for a student to master English grammar and ___ a large vocabulary without the help of a teacher.
A. get
B. learn
C. gain
D. acquire