[ Grammar ]
When you are on duty (đang trực), your uniform ……………..at all times
A. must be worn
B. must wear
C. must have worn
D. must have been worn
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Grammar › ViewThe boy fell off the tall tree.____, he was unhurt.
A. Although
B. However
C. Moreover
D. Therefore
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This orbits another planet to collect information.
A. satellite
B. telescope
C. space shuttle
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A. won’t live
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C. would live
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He ______ about to give up his job when they offered him a rise.
A) was
B) is
C) has been
D) had been