問題詳情

13. Don't push yourself too hard; taking a vacation 　　　 enables one to restore energy, so stop being tense all the time.　
(A)on occasion　
(B)on the off chance　
(C)in time　
(D)around the clock

參考答案

答案：A
難度：適中0.5
統計：A(2),B(2),C(0),D(0),E(0)