Respuestas
1. A pencil, a pen, a watermelon, a bed, and a lamp
An elefant, an ice, an airplane, an ant and an uniform
Es sencillo solo tienes que usar an cuando la palabra seguida empiece por vocal
2. En esta actividad no entiendo muy bien si son 15 ejemplos de cada uno o 15 en total así que te pongo 5 de cada uno.
In the morning, in the 16th, in three days, in 1945 and in the summer
Usa «in» para tiempos no específicos
On New Year’s Day, on Saturday evening, on Monday, on Friday, and on April 23rd
Usa «on» para días y fechas
At the moment, at the weekend, at noon, at midnight snd at seven
Usa «at» cuando especificamos la hora
5. Fruits: apple, watermelon, pineapple, cherry and berry
Vegetables: potato, tomato, lettuce, onion and garlic
6. Colors: red, blue, green, yellow and pink Family: mother, father, uncle, grandmother and husbandAnimals: shark, dolphin, bird, lion and dog
Transportation: bicycle, motorcycle, car, train and plane
7. 1 one, 2 two, 3 three, 4 four, 5 five, 6 six, 7 seven, 8 eight, 9 nine, 10 ten, 11 eleven, 12 twelve, 13 thriteen, 14 fourteen, 15 fifteen, 16 sixteen, 17 seventeen, 18 eighteen, 19 nineteen, 20 twenty.
8. 10 ten, 20 twenty, 30 thirty, 40 forty, 50 fifty, 60 sixty, 70 seventy, 80 eighty, 90 ninety and 100 hundredEspero haberte ayudado