----They’re going to lose the match______ they improve their skills.

A. unless B. until C. if D. as

【题目】—________
—Yes. They are my favorite days.
A.What are your favorite days?
B.Do you like Saturday and Sunday?
C.What about your favorite days?
D.How about Saturday and Sunday?

【题目】We have ________ geography lesson in the afternoon. I think it's ________ useful subject.
A.a; a
B.an; a
C.an; an
D.a; an

—I study_______ working with a group .

A. What , with B. How, by

C. Why , by D. What, by

【题目】—When ________ she have P．E.?
—She ________ it on Tuesday.
A.does；has
B.does；have
C.do；have
D.do；has

A. performances B. instruments C. talents D. bells

【题目】I don't like history________ it's difficult.
A.and
B.but
C.so
D.because