According to the passage, you should not swim alone because ______.

(单选题)A panda’s primary activity is sleep, ______ its waking hours (单选题)I had a strong desire to reach in and play with the toy, but (单选题)The ______ that there is life on other planets in the univer (单选题)______ a strange plant! I’ve never seen it before. (单选题)At times he has to stay up late for the homework, ______ he (单选题)—You know what? I’ve got a New Year concert ticket.—Oh, ____ (单选题)I was sent to the village last month to see how the developm (单选题)It’s said that the power plant is now ______ large as what i (单选题)I did not choose any of the three offerings, because I found (单选题)Four and ______ half hours of discussion took us up to midni