Wecan’thoist()nationalflag.
A. clean
B. worn
C. beautiful
D. good
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Whenwehoistnationalflagtogetherwithotherflags,weshouldkeepthenationalflaginthe()place.
A. centre
B. lower
C. A+B
D. AorB
定期维护属于()。
A. 自主维护
B. 专业维护
C. 突发故障维护
Theywill()againstpiratesandpilferage.
A. takeplace
B. takeover
C. takemeasures
D. takeup
I’ll()thesheetcarefully.
A. goafter
B. gooff
C. gothrough
D. goaway