单项选择题What does the passage mainly discuss
单项选择题【B3】()
A.adaptB.adjustC.be adaptiveD.be adjustable
单项选择题During the First World War, soldiers who spent long periods in cold and wet trenches________.
单项选择题A.It’’s tedious.B.It’’s absurd.C.It’’s justifiable.D.It’’s understandable.
单项选择题A.He has just started to teach piano lessons.B.He seldom takes things seriously.C.He is very proud of his piano skills.D.He usually understates his achievements.