So heavy ______ that I could hardly see anything through the window in winter.

(单选题)What’s Ravishankar’s attitude to Will’s replacing Human educ (单选题)What is the benefit of this two-way interaction? (单选题)From the passage we know that ______. (单选题)What was special for some elementary school students in Auck (单选题)（ ） (单选题)（ ） (单选题)（ ） (单选题)How long do you think ______ the car factory launches a new (单选题)Mr. and Mrs. Green would like to see their daughter ______, (单选题)I still have some sweet memories of my childhood. ______, I