Our head teacher is responsible for his work．He spends most of his time with us．
________ He always communicates with our parents in his free time．（ ）
A．I hope so！B．What？
C．That's for sureD．Why？
The villagers expect that the building of the bridge ____ before the rainy season comes．（ ）
A．is completedB．was completed
C．will be completedD．has been completed
﹣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