Jawaban:

1. there is

2. there is

3. there is

4. there is

5. there are

1. (-) there are not many cows in the field

  (?) are there many cows in the field?

2.(-) there is not a book on the desk

  (?) is there a book on the desk?

3.(-) there are not four hospitals in the town

  (?) are there four hospitals in the town?

4.(+) there is much water in the pail

  (?) is there much water in the pail?

5.(-) there are many buses on the road

  (+) there are not many buses on the road

Penjelasan:

untuk kata benda tunggal menggunakan there is

untuk kata benda jamak menggunakan there are

untuk kalimat negatif ditambah notsetelahto be

untuk kalimat tanya, to be diletakkan di depan