4。上午我支吃一点儿面包和喝一杯咖啡。 Is it okay to use 有点儿 instead of 一点儿? No, it is not correct to use 有点儿 instead of 一点儿 in this sentence. Because 吃 is a verb. 有点儿 can not be behind a verb.

3。上班的时候我坐公共汽车坐最地铁D。 In this sentence, 上班的时候 means when you go to work? or while you go to work? I don't know how to answer your question. But, you can understand that "上班的时候我坐公共汽车" means I go to work by bus.

2。周末你们常作什么？/ 周末你们常常作什么？ Are these sentences correct? your expression is correct. However, 作should be做。

1。我和同学一起常常学习。 Is this sentence correct? How about 我和同学一起常学习。? The best expression is "我常常和同学一起学习" and "我和同学常常一起学习". This sentence "我和同学一起常学习" is not correct. You can say "我常和同学一起学习" and "我和同学常一起学习".

I‘m .............. sad (我很伤心 wo hen shang xin) happy (我很高兴 wo hen gao xing) tired (我累了 wo lei le；我好累啊 wo hao lei a) okay (我还可以 wo hai ke yi；我没事 wo mei shi) mad (我很生气 wo hen sheng qi) bored (我好无聊啊 wo hao wu liao a)

will kiss boss