--- -Your mobile phone is quite nice. Where did you buy __________ ? ---- In Shenzhen .Do you want to have _______ like this? 

— How pleasant 　　　 is to go fishing with my father! — Yes. Parents and children should spend more time together. 

I don’t think         possible for us to learn a foreign language well without hard work.

 –Where ______ my pens? –      on the table. 

I don’t make ________ clear when and where the parents’ meeting will be held.