Fill in the blanks with the simple past, the past perfect, or the past perfect continuous of the verb in parentheses.Before he flew to the USA last year, he was afraid to fly because he (never/be) ____________ on an airplane before.

The amount of iron in the body is mostly regulated by

Two-thirds of body water is in the

Water moves from an area of higher solute concentration to an area of lower solute concentration by

Which of the following is a good chromium source?

2.1.1 Define the term rock cycle. (1)

1.4.3 Identify the season represented by the synoptic map. (1)

2.1.2 Give the correct names for rocks labelled A, B and C. A = [ant1] B = [ant2] C = [ant3] (3)

Seclect the choice that best fits in the blank according to the rules of formal English.He’s the man about ___________ I told you.

Seclect the choice that best fits in the blank according to the rules of formal English.When she finally passed the exam, she _____ for over six months.