Because of _______ high demand for Type O blood, _______ supplies of it available in blood banks are usually limited.
一I still cannot figure out why he missed his flight. 一Hean accident on the way to the airport.
Mr.Smith is a good teacher except that hesome of his students by criticizing tbem whenever they make a mistake.
Modern technology has brought us so much convenience--we can now do many things Throughwe call the Internet.
You can’t go out since you haven’t finished your homework;,it is a stormy night.
The man,so badly,almost lost his memory and was even driven mad.