一、单项选择
1.I have ________ cough. I feel terrible.
A.a B.an C.the D./
2.The 31st Olympics were held in Rio ________ August 5
________ August 21, 2016.
A.in; to B.on; to C.at; from D.from; to
3.—You seem quite ________. What happened?
—I haven't passed the exam.
A.happy B.happily C.sad D.sadly
4.It's kind ________ you ________ help me with my English.
A.of; to B.for; to C.of; for D.to; to
5.—How about ________ a rest?
—Good idea.
A.have B.having C.to have D.has