I regret ______ you that you failed the exam.— How I regret _____ so much time playing computer games. [ ]

Students are not required to take the TOEEL or the IELTS test but we welcome the submission of your score if you have taken _____.

It is these poisonous products ______can cause the symptom of the flu, such as the headache and aching muscles.

Are ____your brothers- No, ____aren’t. They are TFBOYS.

Three minutes earlier ____ we could have caught theearly train to Philadelphia.