单选题：He hasn't slept at all for three days. ____he is tired out..

Mary enjoys homemade food, so she seldom, ________, eats out. [ ] A. if neverB. if anyC. if notD. if ever

The two girls are so alike that strangers find_______difficult to tell one from the other. [ ]A. it B. them C. her D. that

It was with great joy _____ he received the news ____ his lost son would soon return home. [ ]A. that…thatB. because…that C. because…which D. that…

—Lydia, what did our head-teacher say just now? —Every boy and every girl as well as the teachers who _____ to lead the group _____ asked to be at the school gate before 6:30 in the morning.A．is; isB．are; areC．are; isD．is; are

—What's the matter with your boyfriend?— I can't stand _____ when he often ignores me and talks with other girls. [ ]A. one B. that C. him D. it