He makes ____ a rule to arrive at office on time, which is to be carried out from next Monday.

You can choose _____book you like in the library.

—Mum, I think there is _____ in today’s newspaper. You don’t have to read it.—I _____. I’m looking forward to it.

Shanghai is larger than        city in New Zealand.

“Susan, go and join your sister cleaning the yard.” “Why ______? John is sitting there doing nothing.”