Heconcludedhisspeechwitharemarkthatfailure____themotherofsuccess.
A、musthavelastedB
【句意】本期设计联络会将持续十天才会结束。
【难点】by the time意指no later than the moment that something happens，常与过去完成时和将来完成时连用。
They’dlike____thankthefollowingpeople_____theirhelpandsupport.
Pollisanexampleofaseverelydisabledpersonwhohasbecome______atmanysurvivalskills.
Thecaris_____expensive_____hecan’tbuyit.
____thecenterofourplanetarysystemwasconsideredasheresybythechurchintheMiddleAges.
IsTomatschooltoday?No,He’sathome______hehasabadcold.
