Choose a, b, c, or d that best completes each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
Sometimes Mr. Pike has to work very late _______ night to do some important experiments.
in at for onMôn học
Chủ đề / Chương
Bài học
Chủ đề
Choose a, b, c, or d that best completes each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
Sometimes Mr. Pike has to work very late _______ night to do some important experiments.
in at for on
