In order not to be disturbed ,I spent three days ________ in my study.  
#98167
A
locking
B
locked
C
to lock
D
lock
推荐题目
The lady said she would buy a gift for her daughter with the ________.
#98421
A
20 dollars remained
B
20 dollars to remain
C
remained 20 dollars
D
remaining 20 dollars
In the reading room, we found him     at a desk, with his attention      on a book.
#88267
A
sitting; fixing
B
to sit; fixed
C
seating; fixing
D
seated; fixed