If Jack doesn’t come home as usual, his parents will feel ________ about him

—I’d like to book a single room in your hotel.—OK. They’re US$100 each, but a room with a sea view will cost _____ $10.

 It’s quite _____ of beginners to forget to use an article before a noun.

Once harm is _______ to the eco-system, all species will ________, including man himself. 

I am not a heavy drinker, but I like the        glass of wine.