1.Mary is a vegetarian. I cooked a meal for her yesterday. @ Mary, _____________________________________________________________ 2. I spent whole day looking after my grandmother. It _______________________________________________________________________. 3.Going swimming in the summer is interesting. ->It is._________________________________________________________________________ 4.Mai spends 4 hours a day practicing English with her friends. It takes _______________________________________________________________________ 5. If you are not careful, you will cut yourself with that knife. Unless ______________________________________________________________________

$\text{1. Mary whom I cooked a meal for yesterday is a vegetarian}$

Giải thích: Mary, người tôi nấu bữa ăn cho ngày hôm qua là 1 người ăn chay

$\text{2. It took me whole day to look after my grandmother}$

Giải thích: Công thức S + spent.. time + V-ing = It took .. time + to V (dành bao lâu để làm gì đó)

$\text{3. It is interesting to go swimming in the summer}$

Giải thích: Công thức It's + adj ... (for O) + to V = V-ing.... be (am/is/are/...) + adj

$\text{4.It takes Mai 4 hours a day to pratice English with her friends}$

Giải thích: Công thức S + spend.. time + V-ing = It take(s) .. time + to V (dành bao lâu để làm gì đó)

$\text{5.Unless you are careful, you will cut yourself with that knife}$

Giải thích:  Unless S + am/is/ are hoặc V1/Vs/Ves hoặc don't/ doesn't V1 ..... S + will/can/may + V1