Doctor Bethune sometimes had to treat the wounded on _____ own．（ ）
A．himB．hisC．themD．their
﹣﹣﹣These shoes look cool．_____are they？
﹣﹣﹣They are on sale，only 69dollars．（ ）
A．How muchB．How longC．How many
﹣﹣﹣I think everyone should play a part in saving our environment．
﹣﹣﹣I agree．For example，there will be less air pollution_____we drive less．（ ）
A．ifB．soC．though
﹣﹣﹣Have you seen the movie Zootopia？
﹣﹣﹣Yes，I've seen it twice．Of all the movies I've ever seen，It's the____one．（ ）
A．interestingB．more interesting
C．most interesting
﹣﹣﹣What a great thing to have a robot at home!
﹣﹣﹣Robots are really useful．One day they will help people do almost﹣﹣﹣﹣﹣﹣﹣．（ ）
A．somethingB．everythingC．nothing
﹣﹣﹣The milk shake tastes good．How do you make it？
﹣﹣﹣It's easy，just follow the______．（ ）
A．discussionsB．instructions
C．resolutions