（    ）15．You can _________in the dictionary if you don’t know the words．

    A．look them up          B．look up them          C．look it up               D．look up it

（    ）14．―_________the population of your country'?

           ―_________Sorry．I don't know．

    A．How many            B．How much            C．What’s                 D．What

（    ）13．There are about ___________students on the playground．

    A．thousands                                              B．four thousand

    C．four thousands of                                       D．four thousands

（    ）12．Would you like to _________the radio，Please? My baby is sleeping．

    A．turn on                B．turn down            C．turn up                  D．turn to

（    ）11．Don’t forget _________your mother．

    A．take a message to                                     B．to carry a message for

    C．to make a message for                                D．bring a message to

（    ）10．She hasn’t gone to school _________last week．

    A．since                   B．for                      C．on                         D．in

（    ）9．Chinese feel like _________dumplings and mooncakes．

    A．eat                      B．to eat                   C．ate                      D．eating

（    ）8．We haven’t read the story __________．Is it interesting?

    A．already                B．after                    C．yet                        D．just

（    ）7．When we press the key“__________”，we begin a new line．

    A．shift                    B．enter                   C．space bar                D．screen

（    ）6．You can do many things _________the internet．

    A．on                       B．in                        C．by                         D．at