grammar present simple / present progressive

I .................. the UK this summer .

• visit

• visits

• visiting

• am visiting

Are you .......................next summer's vacation with your kids?

• spending

• spend

• spends

• spent

I usually ..................on trips where meals are all-inclusive.

• go

• goes

• going

• gone

My friend , Ali ................for a big company.

• working

• works

• work

• worked

Water ............at 100 centigrade.

• boil

• is boiling

• boiled

• boils

.................water ............ at 0 centigrade?

• Are / freezing

• Do / freeze

• Does / freeze

• Is / freezing

In chapter seven , sally ...............her mother again .

• meet

• meeting

• meets

• met

The train for Cairo ..........................at 5:30 PM .

• depart

• departs

• departure

• departing

Tourism ........................an important industry in many developing countries .

• become

• becoming

• is becoming

• becomes

It ................to be getting colder.

• seem

• seems

• seeming

• seemed