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

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Grammar › ViewWe ………………. talk on our phones in the classroom.
A. must
B. mustn’t
Grammar › View
Choose the correct conjunction to complete the sentence below.
She did not study, _____ she failed the test.
A. so
B. but
C. nor
D. yet
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
