Which pair of the words with the underlined letters has the same sound?
A.disease treasure B.knowledge blow C.smooth though
Which pair of the words with the underlined letters has different sounds?
A.grateful athlete B.alive private C.gesture medal
Though he has studied ________ at Russian for ten months, he can still ________ speak the language.
A.hard, hard B.hardly, hardly C.hard, hardly
To my surprise, ________ a little boy can draw ________ many beautiful pictures.
A.so, so B.so, such C.such, so
—Mrs. Zhang was sent to teach English in a poor mountain village last year.
—She said she would never forget some pleasant________ while working there.
A.exhibition B.expressions C.experiences
Recently, a documentary called Under the Dome（穹顶之下）appeared in public. Through it, we clearly realize that to protect the environment ________ to protect ourselves is equally important.
A.as long as B.as well as C.as soon as
