Building makeshift hospital（临时医院）was a key _______ made in the moment when Wuhan was facing the task of epidemic（流行性传染病）control．
Right． It has played an important role in treating the patients．（ ）
A．decisionB．situationC．problemD．condition
﹣ My family will go on a trip to Beijing this summer.But we haven't decided _________.
﹣ Why not take the high﹣speed railway!（ ）
A．when to leave
B．how to get there
C．which hotel to choose
D．how long to stay there
My cousin is creative enough to _________ the new challenging task.（ ）
A．take onB．take outC．put upD．put in
Little Simba went hunting alone.The Lion King walked around，_________ his safety.（ ）
A．with the help ofB．in fear of
C．at the speed ofD．on top of
China grows a great deal of cotton，_________ in the western areas.（ ）
A．finallyB．highlyC．warmlyD．mostly
﹣ Could you play the piano at the age of five？
﹣ No.I _________ .I started at six.（ ）
A．can'tB．shouldn'tC．needn'tD．couldn't