The robot needs _______ once a month. And we will check it for you for free.
| A．to check | B．checked | C．checking | D．to checking |
---I will buy you a new bike if you learn how to swim this summer.
---Is that a _______? I’m sure I’ll get the bike.
| A．chance | B．treat | C．trick | D．promise |
Bill Gates has donated millions of dollars to charities. He is really a(n)_____man.
| A．generous | B．outgoing | C．modest | D．active |
Don’t ______ too late, or you will feel tired tomorrow.
| A．get up | B．stay up | C．give up | D．wake up |
It is said that people born in the year of the Dog are ________.
| A．brave | B．loyal | C．creative | D．patient |
The students were all tired, but ________ of them stopped to have a rest.
| A．none | B．no one | C．nobody | D．not one |