从下面方框中选出与下列各句中划线部分意思相同或相近、并能替换划线部分的选项。（共4小题，每小题1分，计4分）

从下面方框中选出与下列各句中划线部分意思相同或相近、并能替换划线部分的选项。（共4小题，每小题1分，计4分）

A. Don’t worry B. nervous C. prevent D. should

小题1:Waiting for the result of the exam makes me tense sometimes.
小题2:When she first went into an Islamic restaurant, she didn’t know what she was supposed to do.
小题3: Take it easy , I’m sure you will pass the exam successfully.
小题4:Sunglasses usually help to keep out the sun