Ответ:
Mary looks exhausted. What
has she been doing all working day?
How long
have they known their history teacher?
How many times
has Tim visited Sidney?
Jess
has been learning Spanish words for hours, but she still doesn't remember all of them.
Sorry, we are late.
Have you been waiting for a long time?
Friends
have been playing chess for several hours.
Has Nina been studying for a long time today?
My uncle
has never played curling.
Dave
hasn't seen his colleagues recently.
Melony
has been writing the report all day, but she
hasn't finished yet.
Объяснение: