21. Some parents tend to give children ______ pocket money to let them learn its value from experience at _____early age.
A. the; an B. a; the C. /; an D. /; /
22. It is reported that more than 100 tons of “gutter oil”(地沟油) has been ______ and 32 people have been arrested.
A. caught B. grabbed C. seized D. snatched
