According to______rule made in 2017， some kinds of dogs mustn't be kept since May 1st， 2018 in Dongying．（ ）
A．aB．anC．theD．/
The__________Brazil's Olympic games will be held on August 5．
_________exciting news for the long summer vacation!（ ）
A．thirty﹣one； How a
B．thirty﹣first； What
C．thirty﹣first； What an
D．thirty﹣one； How
What did the teacher say to you？
He asked me______．（ ）
A．why I look unhappy then
B．when did I go home last night
C．how could I solve the problem
D．if I had got everything ready
I still haven't found my pet dog．
I'm sorry to hear that．You______ be very sad．（ ）
A．canB．shouldC．mustD．will
Why did she______your invitation？
Because she had an important meeting to attend that day．（ ）
A．turn downB．put awayC．look upD．hand in
Her father tried to______ that nothing unusual had happened．
In fact，it was not serious．（ ）
A．imagineB．pretendC．meanD．warn