Use "there is / there are" construction in the necessary tense form:
1) Look! ...... a photograph of George in the newspaper.
2) Twenty years ago ..... many tourists here. 3) I am sorry. I am late. ... a lot of traffic.
4). .....24 hours in a day.
5) We are staying at a very big hotel..... 250 rooms.
6) I don't think ..... any problem
7)..... a nice girl in our class.
8)......no cakes left on the table.
9)......a big car in front of our garden.
10)...... a lot of noisy children in the classroom yesterday.
11) .... no books on your desk.
12) ...... a black pencil on the floor .
13) ..... a knife in the kitchen.
14) I was hungry but ..... anything to eat.
15) ...... no eggs left.
16) The shopping centre is huge. ..... a lot of shops.
17).... a new computer in Peter's room.
18) We missed the train. ..... a lot of traffic jams.
19)....... a pump on my bike.
20).... no blue crayons in the cupboard