What _______ public is concerned about is whether medical workers and scientists will be able to find _______ cure for this new disease after the vaccine(疫苗) is tried on volunteers.
It suddenly to the detective that the millionaire was probably murdered by his own daughter.
—Does he know how to work out the problem ? —Yes , he has a good idea to solve it .
—What do you think of Andrew ? —There are some things that are not easy to , and his coldness is one .
The Browns sent lots of invitations for their party. But because of the improper time, few people _____ it.
Ling Feng won the first prize in the national English competition and I’m glad that her efforts at last ________.