People can only go straight when they see the ________ sign. 
There ______ a book, two pens and three pencils on the desk.
| A．are | B．be | C．is | D．will be |
Not only Tony but also Betty ______ to go sightseeing with friends.
| A．want | B．wants | C．wanting | D．is want |
There is no ______. I have to write it on the blackboard with ______.
| A．paper, chalks | B．paper, chalk | C．papers, chalks | D．papers, chalk |
---Where is your brother? ---He is in Beijing. He _____ back in three days.
| A．will come | B．comes | C．has come | D．came |
---Would you like to go bike riding with us tomorrow? --- _________.
| A．Sorry, I’d love to. | B．Sure, I’d love to. |
| C．Sure, I have to help my parents. | D．Yes, I can. I have a piano lesson. |