4(
)内から適切なものを選びなさい。
Thawe
ot
(1) Eric( has just finished / linished ) his homework half an hour ago.
(2) How long ( are you playing / have you been playing ) the drums?
(3) I( am / have been )a big fan of the band for ten years.
(4) Mike( was never
/ has never been ) to Hokkaido.
(5) When Igot to the park, the festival ( already started / has already started /
otioed. but K
had already started ).
(6)I( amdoing / have been doing / had been doing ) my homework for an hour
when my mother came home.