1. I bought the chair yesterday. It is broken. (which)
-->The chair.................................................broken.
2. There isn't a river in her hometown. (wishes)
-->She.................................................in her hometown.
3. Tuan could get better grades if he studied hard. (doesn't)
-->Because.............................................................better grades.
The chair which i bought yesterday , is broken
She wishes there was a river in her hometown ( câu này em nắm rõ công thức lùi thì nhé từ HTD thì mình chuyển qua QKD kể cả tobe)
Because tuan doesnt studied hard , he couldnt get better grades
Dạ, em cảm ơn.