A: Could we start a little earlier?B: Well, it depends on the Parkers. I've made arrangements to start as soon as they (return) __________19/20A: Could we start a little earlier? B: Well, it depends on the Parkers. I've made arrangements to start as soon as they (return) __________will have returnedreturnedwill returnhave returnedGiải thíchChọn đáp án D