Junior high school days will be over _______ a week．How are you feeling？
I'm trying to keep my cool because we've been together ________ three years．（ ）
A．in；inB．for；inC．in；forD．for；for
﹣Shall we go to the airport to ___ your sister？
﹣I don't think it's necessary． She will come here by taxi．（ ）
A．see offB．pick up
C．look afterD．come across
﹣I wonder ____ the students have a physical examination．
﹣Once a year．（ ）
A．how farB．how soonC．how longD．how often
The designer has tried every possible way to make the robot light， so you _____ worry about its weight．（ ）
A．mustB．mayC．can'tD．needn't
On sunny days， my grandma often reads a novel ____ the window．（ ）
A．byB．forC．withD．from
﹣Hello， Beijing Hotel． Can I help you？
﹣Yes， I'd like to _____ a single room for two nights．（ ）
A．enterB．moveC．bookD．provide