The professor worked for 7 hours at a ________.
A、stretchA
此題考查的是固定詞組搭配。atastretch一口氣地
Thereisanambiguityinthesentence“Heisahardbusinessman”dueto______.
Words that are identical only in spelling but different in sound and meaning are called ______.
WhichofthefollowingisNOToneofthecharacteristicsofidioms?
Perseverance is a kind of quality and that is _______ it takes to do anything well.
Collins COBUILD English Language Dictionary (1987) has some unique features such as definition, extra column and ______.
