We can never expect      bluer sky unless we create      less polluted world.

A．a; a              B．a; the             C．the; a            D．the; the

Every year,  many competitors from famous university come to the Thames to compete        each other       boating.

A．for; against        B．against; with       C．with; in           D．in; with

If you leave the club, you will not be        back in.

A．received          B．admitted          C．turned            D．moved

Jane won't join us for dinner tonight and        .

A．neither won't Tom   B．Tom won't either    C．Tom will too        D．so will Tom

Another five volunteers       to take care of the homeless children this week.

A．will select         B．have selected      C．will be selected     D．have been selected

I bought a dress for only 10 dollars in a sale; it was a real       .

A．exchange         B．bargain           C．trade             D．business

A new cinema      here . They hope to finish it next month.

A．will be built        B．is built            C．has been built      D．is being built

Every year a flood of farmers arrive in Shenzhen for the money-making jobs they    before leaving their hometowns.

A．promised         B．were promised     C．have promised     D．have been promised

The new dictionaries are very useful. They        well and       already.

A．sell; have been sold out                  B．sold; had sold out

C．sell; sell out                            D．are sold; have been sold out

In our class, when the bell rang and the teacher closed his book, it was a      for everyone to stand up.

A．signal            B．chance           C．mark             D．measure