【题目】Shelly prepared carefully for the exam________she could be sure of passing it at the first attempt.
A.even if
B.in case
C.so that
D.now that

【答案】C
【解析】该句是含目的状语从句的主从复合句，故要选引导目的状语从句的连词so that，意为“以便”。even if“即使”引导让步状语从句；in case“以防，万一”，引导目的状语从句；now that“由于，因为”，引导原因状语从句，均不符合题意。