I found it tiring to begin _______ but I soon get used to it.
A. in
B. with
C. to
D. for
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The boy screamed his ______ off with fear.
A. mouth
B. head
C. face
D. ear
There is some doubt ______whether the information is totally accurate.
A. as for
B. as
C. as to
D. as about
His new book is selling ______ crazy.
A. as
B. like
C. just
D. for
The only way to improve is through hard work and dogged _______.
A. perseverance
B. persecution
C. persevere
D. persist