Beijing was attacked by such a terrible sandstorm ______few citizens had ever experienced before.
I called Hannah many times yesterday evening,but I couldn't get through. Her brother_____ on the phone all the time!
The growing speed of a plant is influenced by a number of factors,____are beyond our control.
When asked _____ they needed most, the kids said they wanted to feel important and loved.
You don’t have to know the name of the author to find a book. You ____find the book by the title.
---When did you last hear _____ Jay?---He phoned me this morning, and we agreed____ a time and place to meet. A of, to B about, with C. from, with D. from, on