—What are those? —are their books.
| A．Those | B．They’re | C．They | D．It |
—Is this _____ schoolbag? —No. It's _____.
| A．your；my | B．my；your |
| C．your；his | D．his ; her |
Not only oral English but also written English _____ important.
| A．is | B．are | C．was | D．were |
—We’ll make a trip to Hainan Island next weekend. Will you go with us?
—No, I can’t _____ it at present.
| A．afford | B．save | C．offer | D．accept |
—How many students are there in the classroom?
—_____ I don’t know where they have gone.
| A．No one. | B．None. | C．Nobody. | D．Nothing. |