43．A．on                       B．for                      C．with                             D．in

42．A．What                   B．Where                 C．Why                       D．When

41．A．healthy                 B．healthier              C．healthiest                      D．unhealthy

40．The two girls were               at the              news．

A．amazing；amazing                                  B．amazed；amazed

C．amazing；amazed                                      D．amazed；amazing

When you laugh，you'll open your mouth and show your teeth．The    41    your teeth are, the happier you look   42     is that?

It's because your teeth are import    43    many ways．If you take care of them, they can also help to   44    you．Strong, healthy teeth help you eat the right food and help you grow  __45  ．They also help you speak clearly．

You can take care of your teeth by doing like these：

● Brush your teeth   46    a day―after breakfast and before bedtime．

● Brush all of your teeth，not just the front ones．  47    some time on the teeth along the sides and in the back．

● Take your time while brushing．Spend   48    3 minutes each time．

● Be sure your toothbrush is soft （软的）．Ask your parents   49    a new toothbrush every three months for you．

● Care about what you eat and drink．Eat more fruits and vegetables and less junk food．Drink more    50    and less drinks．

39．              100 years          will the world be like?

A．After, What           B．Before，how       C．In，What               D．On，how

38．On weekend, you'll              yourselves move casually．

A．be able to dress           B．can wear              C．be able to wear    D．can dress

37．--I'm sorry I          my homework at home．

--But don't forget          it here tomorrow．

A．forgot, to bring           B．left, to bring        C．forgot，bringing    D．left, bringing

36．May is           at Spanish．She has a hard tike            it．

A．good；learn          B．good；learning           C．poor；learn         D．poor：learning

35．              beautiful weather it is! Why not go out for a walk?

A．What                   B．How                    C．What a                   D．How a

34．              is a good idea to have a party this evening．

A．This                    B．That                    C．It                          D．Which