Are babies carefree（无忧无虑）？ A new study from the US says that 2﹣year﹣ old babies care about _________． （ ）
A．how others saw them
B．how do others see them
C．how others see them
When an earthquake happens，I think the most important safety _____ is to keep calm（ ）
A．ruleB．doubtC．conditionD．problem
Hearing the good news，Betty laughed and ran out of the classroom（ ）
A．sadlyB．quietlyC．angrilyD．excitedly
I can't believe it．Tony has invented a tree﹣planting machine．
Really？He is so（ ）
A．shyB．rudeC．creativeD．friendly
Jenny has a sweet tooth．Let's make some cookies for（ ）
A．meB．himC．herD．them
Do you know when ________ today？（ ）
A．is the bookstore closed
B．does the bookstore close
C．the bookstore closes