I need help _____my English,but I can help you______your Chinese.

_____ he is very busy, he spends at least two hours every day surfing the Internet in order to find out the latest development in science and technology

Jenny tried her best to learn English even though while she ______ in Yunnan last summer.

I have_____ to tell the class.

Eating too much ice-cream isn’t good____people,but it tastes______.