I’m sorry I didn’t phone you, but I’ve been very busy ___ the past couple of weeks

Jim has many hobbies, ________ swimming, hiking and playing badminton.

It is reported that people throw_____ plastic bags along this street every day.

John, work hard ________ you willmake much progress.

Green is the color of _______ nature. And you canenjoy the colorful rainbow in _______ sky after the rain.