Подчеркните в каждом из предложений глагол-сказуемое и определите его форму и видо-временную форму и залог. 1. an extensive programme of cleaning and restoration of historic buildings especially in towns, where centuries of grime (грязь) have been deposited, has been under way for several years. 2. there are several techniques for protecting oneself from radiation, that have been worked out by our specialists. 3. the structures humans build undergo chemical and physical weathering, just as rocks and minerals do.
I/You/We/They close, I/You/We/They don’t close, Do I/You/We/They close?
He/She/It looks, He/She/It doesn’t look, Does he/she/it look?
to go
I/You/We/They go, I/You/We/They don’t go, Do I/You/We/They go?
He/She/It goes, He/She/It doesn’t go, Does he/she/it go?
to open
I/You/We/They open, I/You/We/They don’t open, Do I/You/We/They open?
He/She/It opens, He/She/It doesn’t open, Does he/she/it open?
to read
I/You/We/They read, I/You/We/They don’t read, Do I/You/We/They read?
He/She/It reads, He/She/It doesn’t read, Does he/she/it read?
to sit
I/You/We/They sit, I/You/We/They don’t sit, Do I/You/We/They sit?
He/She/It sits, He/She/It doesn’t sit, Does he/she/it sit?
to live
I/You/We/They live, I/You/We/They don’t live, Do I/You/We/They live?
He/She/It lives, He/She/It doesn’t live, Does he/she/it live?
Остальное попробуй сама по моему образцу, там форма глагола меняется только в утвердительном с третьим лицом