Taught in a more professional way, you the swimming skill much better．

A． might master B． would have mastered

C． can have mastered D． could master

The drama, “The Empress of China" that was pulled off the air for technical reasons now back on TV．

A． is B． are C． has D． have

I waited for him at the train station for an hour and I was afraid that he may miss the train, but luckily, he showed up with only ten minutes ．

A． remain B． to remain

C． remained D． remaining

—I wonder what makes you a good salesperson．

—I as a waiter for three years，which contributes a lot to my today's work．

A． serve B． have served

C． had served D． served

I'm not a little tired today after giving the room a thorough cleaning and I have never had today．

A． as tiring a day as B． as a tiring day

C． tiring as a day as D． day as a tiring as

On their journey, they meet fellow adults in their 20s and 30s lives haven' t lived up to their dreams．

A． who B． whose C． when D． that

I can't remember made the teacher give Mary the permission to leave the class earlier．

A． that it was what B． that was it what

C． what was it that D． what it was that

Research found that children who drank mainly soda were more than twice as likely as those who drank no soda signs of aggression．

A． showing B． shown C． to show D． show

Next door to ours ,who seem to have settled in this community for quite a long time．

A． arc living a black couple

B． arc a black couple living

C． live a black couple

D． do a black couple live

The cost of organic food is higher than of conventional food because the organic price tag reflects more closely the true cost of growing the food．

A． it B． one C． this D． that