Good questions, Nola. I would like to know too, but I would answer this way: 1-a; 2-a:3-b: 4-b and 5-b. Certainly I am not being helpful, but I expressed my opinion. Thanks.
Hi Nola.
My answer is 1. is; 2. is; 3. are; 4. are; 5. are.
In my opinion, nouns that related to an amount of money, time… are always followed by singular verbs. For example:
Five thousand pounds (=it) was stolen in the bank robbery.
Two years is enough for her to become a mature person.
I hope it can help you.
Best wishes.
I would say when you emphasis the fact that you are talking about the number of bottles rather than the amount of the water they hold.[YSaerTTEW443543]
TOEIC listening, photographs: The checkout[YSaerTTEW443543]
I would prefer “Five kilos of honey is not enough.” Here, “honey” is the subject. BTW, an asterisk before a sentence may suggest the sentence is predeterminedly wrong.