If a=2,b=3,the answer to the question"3a+2b=?"is ( )
twelve
twelfth
twenty
twentieth
—Mum, may I have more chocolate?
—You’d better not _____ too much sweet food is bad for health.
until
while
although
because
—Thomas, where are my postcards? I _____ find them.
—They’re on the bookshelf.
can’t
needn’t
mustn’t
shouldn’t
There was a storm yesterday. _____, most of the flowers in my garden are still alive.
Clearly
Luckily
Suddenly
Firstly
—Jack, I have no idea for the report.
—Me neither. Why don’t we ask the teacher for _____?
help
jokes
food
tickets
Everybody, please keep _____. It’s not allowed to make any noise in the reading room.
fit
warm
dry
quiet