PR. PERF. COUNT. OR PR. PERF Nick ( write) his exercises for 2 hours. Mother looks tired....

Question

PR. PERF. COUNT. OR PR. PERF
Nick ( write) his exercises for 2 hours.
Mother looks tired. She ( cook) all morning.
We ( know) each other for 10 years.
My friends ( learn) English for four years.
We never ( be) to Japan.
How long you ( wait) for Mary?

Answer 1

Has been writing Has been cooking Have known Have been learning Have never been Have you been waiting