Pham Tuan said everything quite strange although he ……….. when he was on the ground.
A. prepared
B. has prepared
C. had prepared
D. prepared
Giải bởi Vietjack
Đáp án: C
Giải thích: Hành động xảy ra trước một hành động trong quá khứ
Aircraft flying in …….. arcs create microgravity for tests and simulations that last 20-25seconds.
In July of 1975, the first US-Soviet joint ……… occurred with the Apollo-Soyuz project.
Do you know the reason ……. humans are interested in Mars and other planets in thesolar system?
Mukai Chiaki, the first female Japanese astronaut, ……….. 15 days aboard the space shuttle Columbia in space before it …….. to the Earth on July 23,1994.
Today, the menu on the ISS includes more than 100 items …….. astronauts can choose their daily meals before they fly into space.
Marie, ................ I met at the party, called me last night.
She’s the woman ................ sister looks after the baby for us.
The plants which ................ in the living room need a lot of water.
