I'm so busy

It's been a long day.
I've got a million things to do.
I'm super busy this weekend.
I'm tied up with something right now.
I've got my hands full this weekend.
I've been on the go all day, and I feel exhausted.
Americans often say I've got a lot on my plate.

活多到根本做不完。
这个周末我超级忙。
我现在有点事忙不过来。
这个周末我忙得不可开交。
我忙了一整天，感到筋疲力尽。
美国人常说我有很多事要做。