Pollution has become a great ___________ to our daily life.
A: threaten
B: threatened
C: threat
D: threatens
A: threaten
B: threatened
C: threat
D: threatens
举一反三
- Pollution has become a great ___________ to our daily life.She’s been receiving ___________ phone calls lately. A: threaten; threat B: threatening; threat C: threat; threaten D: threat; threatening
- Pollution has become a great ________to our daily life.
- Lucy has been receiving _______ phone calls lately. A: threat B: threaten C: threatening D: threatened
- ______computers are of great use to our daily life. A: The B: C: A
- ____ The computers are of great use to our daily life. A: The B: C: A D: an