It’s raining hard. ________, my parents are still working in the field.

People are complaining that hospital are_____too much for the treatment they are giving them

_____ to finish this composition in such a short time is a mystery.

If Newton lived today，he would be surprised by what ________ in science and technology. [ ]

What do you think of the four classics (名著) of China—They are wonderful, but I’ve read ______ of them.