Нужно убрать скобки и поставить в правильное время:
1) They (to visit) the capital of Russia next month.
2) I can't help you now. I (to do) my homework.
3) He always (to take care) if his sick mother.
4) The Browns (to go) to the south a week ago.
5) Helen (not to help) her friend yesterdsy.
6) She (to play) tennis with us tomorrow?
7) Could i speak to Susan? - Sorry, she (to take) a shower now.

1) They will visit the capital of Russia next month.2) I can't help you now. I am doing my homework.3) He always  takes care if his sick mother.4) The Browns went to the south a week ago.5) Helen did not  help her friend yesterdsy.6) She will play tennis with us tomorrow.7) Could i speak to Susan? - Sorry, she is taking a shower now.