(2013·陕西高考)The children lost in the woods; otherwise, they would have been at the lakeside camp as scheduled.
A. must have got
B. must get
C. should have got
D. should get
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(答案→)A. must have got
B. must get
C. should have got
D. should get
解析：A 考查情态动词表推测。句意：孩子们肯定在树林里迷路了，否则他们已经按照计划回到湖边营地了。根据would have been可知语境指的是过去，排除B和D项；A：肯定已……；C：应该做(而未做)。A项符合语境。