Choose the word or phrase that best completes each unfinished sentence below or substitutes for the underlined word or phrase.
He spent a lot of time and effort______ that project.
for with to onMôn học
Chủ đề / Chương
Bài học
Chủ đề
Choose the word or phrase that best completes each unfinished sentence below or substitutes for the underlined word or phrase.
He spent a lot of time and effort______ that project.
for with to on