David is a tennis player. He _____ to play tennis when he was six.
A.begins B.will begin C.began D.has began
— ______ has Max practiced playing the piano?
—For about two hours.
A.How long B.How often C.How much D.How many
Zhong Nanshan is one of ______ scientists in China. He is my hero.
A.famous B.more famous C.most famous D.the most famous
I was very tired last night, ______ I went to sleep earlier.
A.so B.or C.because D.but
My uncle will go to Shanghai on business ______ June.
A.on B.in C.at D.for
I have a baby sister. ______ name is Gina.
A.My B.His C.Her D.Its
