If you the medicine, you better now.
| A．took, would feel | B．had taken, felt |
| C．had taken, would feel | D．took, would have felt |
．I invited Mary and Jane to dinner, but of them came.
| A．none | B．either | C．both | D．neither |
．The plant is dead . I ________ it more water.
| A．will give | B．would have given | C．must give | D．should have given |
．The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
| A．what | B．which | C．that | D．though |
He has ______ little education that he finds it impossible for him to equal ______ important a task.
| A．so ;such | B．such ; so | C．so ;so | D．such ; such |
．China is playing an important role in the world. That’s_______Laura has come to study Chinese.
| A．because | B．why | C．how | D．that |