Topics: TOEFL
The upper levels of the sun’s atmosphere are of very low ______ heats the gases there to very high temperatures.
A. dense and solar
B. density, solar activity
C. density, but solar activity
D. density and the activity of the sun is
Select your answer:
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Conjunction › ViewArdian knows Germany, ______, our school selected him to go student exchange in there
A. therefore
B. moreover
C. otherwise
D. provided
Grammar › View
You can have your book back on Monday. __________ it by then.
A. I’ve finished
B. I’ll be finishing
C. I’ll have finished