I’ll let you know the answer by the end of this we...

Câu hỏi: I’ll let you know the answer by the end of this week”, Tom said to Janet.

A Tom offered to give Janet the answer by the end of the week.

B Tom promised to give Janet the answer by the end of the week.

C Tom suggested giving Janet the answer by the end of the week.

D Tom insisted on letting Janet know the answer by the end of the week.