Our skin, if ______ to sunlight for a long time, can become darker.
A. exposes B. exposing
C. being exposed D. exposed
_______ he met with the difficulty did he realize the importance of our help.
A. Never until B. Even though
C. Until when D. Ever since
---How’s that? Who broke the glass?
---Well, it ______ me. I was doing my homework the whole evening.
A. hasn’t been B. wasn’t
C. weren’t D. hadn’t been
Don’t be discouraged. ______ things as they are and you will enjoy every day of your life.
A. Take B. To take C. Taking D. Taken
He kept a little notebook, in which _____ the names and addresses of his fiends.
A. wrote B. was writing
C. were written D. was written
________ alone in the large house, the little boy had to learn to survive by himself.
A. Left B. To leave C. Leaving D. Being left
