a bolt from the blue 晴天霹雳9 G H, m3 e. u/ k% E/ L; u
a piece of cake 轻而易举 7 T- w) `$ e( W& Sabove board 光明正大 * E7 `9 r B; V+ @( Qagainst the clock 分秒必争* s5 \1 r, { B5 B
all thumbs 笨手笨脚 / d1 Q6 x1 N. V9 g: {all wet 大错特错2 ~! Q: }+ |& }; q, `$ K
ants in sb.'s pants 坐立不安- D: F# U& Y1 ?. L( J
apple-pie order 井然有序