Present Simple vs. Present Continuous

I...........(do) my homework now.

• do

• am doing

• am do

• doing

He .........(live) in London

• is living

• live

• lives

• is live

Her baby........(always cry). He is so annoying!

• always cry

• always crying

• is always crying

• always cries

The plane ................ (take off) tomorrow at 9 o' clock.

• taking off

• is taking off

• take off

• takes off

All the students ................ studying now.

"Now" and "today" are time markers specific to....

"always", "usually", "sometimes" are adverbs of frequency specific to....

Present simple is used for .....

• future timetables

• actions in progress in the moment of speaking

• general, repeated actions

• future plans

Present Continuous is used for ......

• temporary actions

• personal plans for the future

• general truths

• Actions in progress in the moment of speaking

What is the difference between Present Simple and Present Continuous?