[ Grammar ]
Wood is opaque but glass is ……
A. Hard
B. Smooth
C. Soft
D. Transparent

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Grammar › View__________ studying law, she also works as a part-time tutor.
A. As
B. Besides
C. Although
D. Between
Conjunctions › View
Choose the correct conjunction
He was tired, _____ he kept working.
A. but
B. because
C. or
Vocabulary › ViewIn most countries, English is _______ for jobs in the tourism sector because it is the common language of most tourists.
A. required
B. facilitated
C. approved
D. retained
Tenses › View
Yesterday I (must) study for our English test.
A. musted
B. must
C. did
D. had to
