Краткое пояснение: Необходимо вставить подходящие по смыслу слова: yet, already, since, for, never, just.
1) She has already seen an avalanche. (уже)
2) We have just brought all the equipment to help the injured. (только что)
3) My brother hasn't arrived at home yet. (еще)
4) I haven't heard from him since the terrible earthquake. (с тех пор как)
5) We have already raised money for the homeless. (уже)
6) They haven't met for a long time. (в течение)
7) They haven't booked tickets to Nepal yet. (еще)
8) The earthquake has just caused a dangerous tsunami. (только что)
9) The e-mails from her haven't come since last spring. (с)
10) My brother has never tried skateboarding. (никогда)