As the night is falling, a long queue stood at the bus stop, nervously expecting _______ .
—I read the 21st Century Senior 2 Edition every day. —_____ no wonder that your vocabulary is so large.
Susan decided not to work on the program at home because she didn’t want her mother to know what she _____.
How often do you visit your grandparents?
The water _____ cool when I jumped into the pool for morning _____.
Gun control is a subject _____ Americans have argued for a long time. A. of which B with which C. about which D. into which