In ____ week or so.I' 11 be among ______ unemployed, I' m afraid.
31.Every solid object______reflect a sound,varying according to the size and nature of the object.
30.Are you certain that this is _________in his speech?
29.— How do you Chinese celebrate Mid-Autumn Day?— Well,it depends.For me,I usually sit in the yard,________the full moon with my family.
28.Although the false banknotes fooled many people,they did not____close examination.
27.These natural parks aye very important for preserving animals,which would_______-run the risk of extinction.