Reorder the words to make correct sentences. 1. we/energy/When / from/comes / hydro/water, /call/it/energy. 2. energy/Nuclear/dangerous/expensive. /is/and 3. for/Our/looking/new/replace/ government/is/sources/energy/to/gas.

$1.$ When water comes from hydro, we call it energy.
$⇒$ When + Clause 1(Chỉ nguyên nhân), Clause 2(Chỉ kết quả): khi
$2.$ Nuclear energy is dangerous and expensive.
$⇒$ Thì HTĐ: Với động từ thường: (+) S + be + O 

be + adj
$3.$ Our government is looking to replace gas with new sources for energy.

$⇒$ Thì HTTD: (+) S + be + V-ing

look + to V: nhìn để làm gì