Inthatschool,Englishiscompulsoryforallstudents,butFrenchandRussianare_________.
A、specialIcanmeetyouateighto'clock;_____youcancallforme.
—Let's take a coffee break.
— __________ We' ve been working for hours.
Theoldladycan'thopeto_____hercoldinafewdays.
Mr. Smith gradually _____ a knowledge of the subject.
Scientists have obtained more evidence ___________ plastic is finding its way into the human body.
