—You will fail in the exams ________ you work hard.
—I know, Dad. I'll try my best.
A. if B. unless C. as long as
Please wait here. I’ll be back in _______ hours.
| A．two and a half | B．two hour and half |
| C．two hours and halves | D．two and half |
----Have you found your lost mobile phone?
----No, I haven’t found _______. I have to buy a new _______.
| A．one; that | B．one; one | C．it; that | D．it; one |
----Is _______ red bag under the table yours, Jean?
----No. I only have ______ yellow bag. Maybe it’s Julie’s.
| A．a; the | B．the; a | C．a; a | D．the; the |
--- Thank you for your help. --- _________________
| A．You’re welcome. | B．You are right. |
| C．All right. | D．The same to you. |
How many ________are there in your school?
| A．tree | B．classroom |
| C．buildings | D．library |