1.A:_____Are you looking_______(you/look) for someone ?

B:Yes,I___need_____(need) to speak to Neil. Is he in?

A:Yes,but I___think____(think) he's busy.He__is talking____(talk) to the boss at the moment.

2. A: I__want____(want) a new computer. I__am saving_____ (save) up to buy one.

B: But computers __cost______(cost) so much money. What's wrong with the one we've got?

A: It__is getting____(get) out of date now.

3.A: Your new dress_looks_____(look) very nice.

B: Thank you. The trouble is it__doesn't fit______(not/fit) properly. I __don't know__(not/know) why I bought them, really.

4. A: What __are you doing______(you/do)?

B: I__am tasting___ (taste) the sauce. It___tastes__(taste) too salty.

Công thức : present simple S+is/am/are+ Adj/ Noun 

                                             S+ V (chia theo S)

                   present progressive S + is/am/are + Ving