How did your students express their thanks to you on Teachers’ Day? — A gift, together with many flowers ______ sent to me by my students

So difficult __________it to live in an English-speaking country that I determined to learn English.

The chance will be given to only ________ students, so ________ of you should try hard to catch it.

Though Mandela﹙曼德拉﹚____27 years in prison﹙监狱﹚, he thought it meaningful.

ther isn’t very good at English, but _____maths, he is second to none.